Insects:Photos

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Insect Photo Gallery



Contents

10-lined June beetle

10-lined June beetle E. E. Nelson, Colorado State University


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10-spotted skimmer adult, Libellula pulchella

10-spotted skimmer adult, Libellula pulchella Howard E. Evans, Colorado State University


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Acrosternum hilare green stink bug

Acrosternum hilare green stink bug (newly emerged nymphs) North America


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Acrosternum hilare green stink bug

Acrosternum hilare green stink bug (drawing) North America


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Acrosternum hilare green stink bug

Acrosternum hilare green stink bug (fifth instar nymph) North America


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Acrosternum hilare green stink bug

Acrosternum hilare green stink bug (adult) North America


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Acrosternum hilare green stink bug

Acrosternum hilare green stink bug (drawing) North America


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Agapeta larvae

Agapeta larvae L. L. Berry, Colorado State University


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Agapeta zoegana, adult

Agapeta zoegana, adult L. L. Berry, Colorado State University


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Ageneotettix deorum, adult

Ageneotettix deorum, adult John L. Capinera, Colorado State University


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Agenioideus humilis, adult with spider prey

Agenioideus humilis, adult with spider prey Howard E. Evans, Colorado State University


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Agrotis ipsilon black cutworm

Agrotis ipsilon black cutworm (adult) Cosmopolitan


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Agrotis ipsilon black cutworm

Agrotis ipsilon black cutworm (drawing) Cosmopolitan


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Agrotis ipsilon black cutworm

Agrotis ipsilon black cutworm (larva) Cosmopolitan


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Agrotis ipsilon black cutworm

Agrotis ipsilon black cutworm (drawing) Cosmopolitan


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Aleiodes indiscretus wasp

Aleiodes indiscretus wasp Parasitizing a gypsy moth caterpillar. Photo by Scott Bauer.


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Alfalfa butterfly, adult

Alfalfa butterfly, adult Frank B. Peairs, Colorado State University


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Alfalfa caterpillar larvae, Colias eurytheme

Alfalfa caterpillar larvae, Colias eurytheme John L. Capinera, Colorado State University


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Alfalfa looper, larvae

Alfalfa looper, larvae John L. Capinera, Colorado State University


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Alfalfa looper adult, dark phase, Autographa californica

Alfalfa looper adult, dark phase, Autographa californica John L. Capinera, Colorado State University


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Alfalfa looper adult, light phase

Alfalfa looper adult, light phase John L. Capinera, Colorado State University


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Alfalfa plant bug, Adelphocoris lineolatus

Alfalfa plant bug, Adelphocoris lineolatus is a non-native plant pest. Photo by Scott Bauer


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Alfalfa webworm, larvae

Alfalfa webworm, larvae Frank B. Peairs, Colorado State University


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Alfalfa webworm, larvae

Alfalfa webworm, larvae John L. Capinera, Colorado State University


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Alfalfa webworm adults, Loxostege commistalis

Alfalfa webworm adults, Loxostege commistalis John L. Capinera, Colorado State University


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Alfalfa webworm egg mass

Alfalfa webworm egg mass John L. Capinera, Colorado State University


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Alfalfa weevil, adult

Alfalfa weevil, adult Sue Blodgett, Colorado State University


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Alfalfa weevil, larvae

Alfalfa weevil, larvae Colorado State University


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Alfalfa weevil, pupae

Alfalfa weevil, pupae Frank B. Peairs, Colorado State University


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Alfalfa Weevil - Adult

Alfalfa Weevil - Adult (Alfalfa/Hay)


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Alfalfa Weevil - Larva

Alfalfa Weevil - Larva Alfalfa/Hay


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Alfalfa weevil adult, Hypera postica

Alfalfa weevil adult, Hypera postica Frank B. Peairs, Colorado State University


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Alfalfa weevil eggs

Alfalfa weevil eggs Frank B. Peairs, Colorado State University


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Alfalfa weevil eggs exposed in alfalfa stem

Alfalfa weevil eggs exposed in alfalfa stem Frank B. Peairs, Colorado State University


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Alfalfa weevil larvae

Alfalfa weevil larvae Frank B. Peairs, Colorado State University


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Almond Moth Larvae and Damage to Peanuts

Almond Moth Larvae and Damage to Peanuts Stored Products


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Ambush bug, Phymata sp., preying on honeybee

Ambush bug, Phymata sp., preying on honeybee Howard E. Evans, Colorado State University


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American Cockroach

American Cockroach Household Insects


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American Dog Tick

American Dog Tick Stinging and Biting Arthopods


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Ammophila hunting wasp carrying Cherry sphinx prey

Ammophila hunting wasp carrying Cherry sphinx prey Whitney S. Cranshaw, Colorado State University


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Ammophila stinging Notodontid caterpillar prey

Ammophila stinging Notodontid caterpillar prey Howard E. Evans, Colorado State University


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Amyotea malabarica

Amyotea malabarica (nymph) preying on looper India


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Angoumois grain moth, adult

Angoumois grain moth, adult Colorado State University


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Angoumois Grain Moth - Adult

Angoumois Grain Moth - Adult Stored Grain


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Angoumois Grain Moth - Larva

Angoumois Grain Moth - Larva Stored Grain


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Angoumois larvae in kernel

Angoumois larvae in kernel Colorado State University


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Anomala rufocuprea

Anomala rufocuprea (adults) Japan


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Anomala rufocuprea

Anomala rufocuprea (drawing) Japan


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Ant Lion

Ant Lion (Doodle Bug) (Beneficial Insects)


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Anticarsia gemmatalis infected with Ento

Anticarsia gemmatalis infected with Entomophthora sp. USA


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Anticarsia gemmatalis velvetbean caterpi

Anticarsia gemmatalis velvetbean caterpillar (adult) North, Central and South America


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Anticarsia gemmatalis velvetbean caterpi

Anticarsia gemmatalis velvetbean caterpillar (drawing) North, Central and South America


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Anticarsia gemmatalis velvetbean caterpi

Anticarsia gemmatalis velvetbean caterpillar (larva) North, Central and South America


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Anticarsia gemmatalis velvetbean caterpi

Anticarsia gemmatalis velvetbean caterpillar (drawing) North, Central and South America


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Antlion

Antlion E. E. Nelson, Colorado State University


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Antlion

Antlion E. E. Nelson, Colorado State University


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Antlion, adult resting on plant

Antlion, adult resting on plant Whitney S. Cranshaw, Colorado State University


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Antlion, pits in sandy soil

Antlion, pits in sandy soil Whitney S. Cranshaw, Colorado State University


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Antlion adult, Brachynemurus sp.

Antlion adult, Brachynemurus sp. Whitney S. Cranshaw, Colorado State University


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Antlion larvae

Antlion larvae Whitney S. Cranshaw, Colorado State University


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Aphelinus mummies

Aphelinus mummies Frank B. Peairs, Colorado State University


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Aphelinus nr. varipes, parasite of Russian wheat aphid

Aphelinus nr. varipes, parasite of Russian wheat aphid Frank B. Peairs, Colorado State University


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Aphelinus-killed Russian wheat aphid

Aphelinus-killed Russian wheat aphid Frank B. Peairs, Colorado State University


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Aphid

Aphid H. F. Schwartz, Colorado State University


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Aphid - Greenbug colony on leaf

Aphid - Greenbug colony on leaf Colorado State University


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Aphid adult on bean leaf

Aphid adult on bean leaf H. F. Schwartz, Colorado State University


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Aphid corn leaf colony on plant

Aphid corn leaf colony on plant Colorado State University


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Aphid oat bird, cherry on midrib

Aphid oat bird, cherry on midrib Colorado State University


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Aphids

Aphids (Tobacco)


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Aphids - Rose

Aphids - Rose (Ornamental Plants)


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aphids on plum

aphids on plum E. E. Nelson, Colorado State University


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aphids on turnip

aphids on turnip E. E. Nelson, Colorado State University


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Aphids or Plant Lice

Aphids or Plant Lice (Vegetable)


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Aphids Tended by Ant

Aphids Tended by Ant (Vegetable)


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Aphis glycines soybean aphid

Aphis glycines soybean aphid (colony of apterae tended by ant) East Asia


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Aphis glycines soybean aphid

Aphis glycines soybean aphid (drawing) East Asia


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Aphis gossypii

Aphis gossypii


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Aphthona adult feeding

Aphthona adult feeding L. L. Berry, Colorado State University


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Aphthona larvae

Aphthona larvae L. L. Berry, Colorado State University


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Apple maggot flies on trap

Apple maggot flies on trap E. E. Nelson, Colorado State University


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Apple maggot on Hawthorn fruit

Apple maggot on Hawthorn fruit E. E. Nelson, Colorado State University


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Apple maggot on trap

Apple maggot on trap E. E. Nelson, Colorado State University


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Argiope sp. Spider preying on caterpilla

Argiope sp. Spider preying on caterpillar USA


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Army cutworm, larvae

Army cutworm, larvae Frank B. Peairs, Colorado State University


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Army cutworm adult - phase D

Army cutworm adult - phase D John L. Capinera, Colorado State University


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Army cutworm feeding injury to broadleaf weeds in winter wheat

Army cutworm feeding injury to broadleaf weeds in winter wheat John L. Capinera, Colorado State University


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Army cutworm larvae, Euxoa auxillaris

Army cutworm larvae, Euxoa auxillaris John L. Capinera, Colorado State University


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Armyworm adult, Pseudaletia unipuncta

Armyworm adult, Pseudaletia unipuncta John L. Capinera, Colorado State University


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Armyworms, larvae on leaf midrib

Armyworms, larvae on leaf midrib Colorado State University


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Ascotis sp. True looper

Ascotis sp. True looper (drawing) East Asia


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Ascotis sp. True looper

Ascotis sp. True looper (larva) East Asia


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Ash borer

Ash borer E. E. Nelson, Colorado State University


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Asian multicolored lady beetle

Asian multicolored lady beetle Harmonia axyridis, is easy to identify from its false "eyes"-- twin white football-shaped markings behind the head. In color, the insects range from black to mustard, with zero to many spots. A common U.S. form is mustard to red and has 16 or more black spots. Photo by Scott Bauer.


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Asparagus Beetle - Adult

Asparagus Beetle - Adult (Vegetable)


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Asparagus Beetle - Larva

Asparagus Beetle - Larva (Vegetable)


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Assassin Bug

Assassin Bug (Beneficial Insects)


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Assassin bug, adult, Zelus sp.

Assassin bug, adult, Zelus sp. Whitney S. Cranshaw, Colorado State University


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Assassin bug, nymph, Zelus sp.

Assassin bug, nymph, Zelus sp. Whitney S. Cranshaw, Colorado State University


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Astata occidentalis with stinkbug prey

Astata occidentalis with stinkbug prey Howard E. Evans, Colorado State University


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Atractomorpha bedeli

Atractomorpha bedeli (adult) East Asia


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Atractomorpha bedeli

Atractomorpha bedeli (drawing) East Asia


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Aulacophora sp.

Aulacophora sp. (adult) Korea


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Aulacophora sp.

Aulacophora sp. (drawing) Korea


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Austracris guttulosa

Austracris guttulosa (adult) Australia


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Austracris guttulosa

Austracris guttulosa (adult) Australia


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Azalea Mealybug

Azalea Mealybug (Ornamental Plants)


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Bacillus thuringiensis killed alfalfa webworms

Bacillus thuringiensis killed alfalfa webworms John L. Capinera, Colorado State University


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Back Pecan Aphid Damage

Back Pecan Aphid Damage (Pecan)


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Bagworm

Bagworm (Ornamental Plants)


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Bahia Grass Borer

Bahia Grass Borer (Soybean)


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== Banded Cucumber Beetle == 1 Banded Cucumber Beetle 1 (Vegetable)


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Banded sunflower moth larvae, dark phase

Banded sunflower moth larvae, dark phase Frank B. Peairs, Colorado State University


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Banded sunflower moth larvae, Phalonia hospes, light phase

Banded sunflower moth larvae, Phalonia hospes, light phase Frank B. Peairs, Colorado State University


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Beauvaria-killed European corn borer larva in tunnel

Beauvaria-killed European corn borer larva in tunnel John L. Capinera, Colorado State University


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Beauveria bassiana on Russian wheat aphid

Beauveria bassiana on Russian wheat aphid Susan Halbert, Colorado State University


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Bedbug

Bedbug Stinging and Biting Arthopods


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Beet armyworm, larvae

Beet armyworm, larvae Frank B. Peairs, Colorado State University


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Beet armyworm, larvae

Beet armyworm, larvae John L. Capinera, Colorado State University


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Beet armyworm larvae, Spodoptera exigua

Beet armyworm larvae, Spodoptera exigua John L. Capinera, Colorado State University


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Beet webworm, larvae

Beet webworm, larvae Frank B. Peairs, Colorado State University


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Beet webworm larvae, Loxostege sticticalis

Beet webworm larvae, Loxostege sticticalis Frank B. Peairs, Colorado State University


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Bertha armyworm adult, Memestra configurata

Bertha armyworm adult, Memestra configurata John L. Capinera, Colorado State University


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Big-eyed bug

Big-eyed bug Having glued a hapless whitefly to a leaf, the big-eyed bug can devour its prey at its leisure. Photo by Jack Dykinga


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Bihar hairy caterpillar

Bihar hairy caterpillar (drawing) India


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Bihar hairy caterpillar

Bihar hairy caterpillar (larvae) India


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Bilobed looper, adult

Bilobed looper, adult John L. Capinera, Colorado State University


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Bilobed looper, late-instar larvae

Bilobed looper, late-instar larvae John L. Capinera, Colorado State University


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Biosteres arisanus wasps

Biosteres arisanus wasps inject their eggs into oriental fruit fly eggs. Photo by Scott Bauer


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Biting midge

Biting_midge A sixteenth-inch-long female biting midge, Culicoides sonorensis, feeds blood delivered through artificial membrane developed for mass insect rearing. Photo by Scott Bauer.


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Black armyworm adult, Agrotis ipsilon

Black armyworm adult, Agrotis ipsilon John L. Capinera, Colorado State University


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Black bean aphids, vector of various beet viruses

Black bean aphids, vector of various beet viruses E. G. Ruppel, Colorado State University


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Black Carpet Beetle

Black Carpet Beetle Stored Products


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Black Carpet Beetle Damage

Black Carpet Beetle Damage Stored Products


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Black cherry aphid

Black cherry aphid E. E. Nelson, Colorado State University


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Black cutworm, adult

Black cutworm, adult John L. Capinera, Colorado State University


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Black cutworm, larvae

Black cutworm, larvae John L. Capinera, Colorado State University


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Black cutworm, plant cut off by

Black cutworm, plant cut off by Colorado State University


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Black Cutworm and Damage to Corn Seedling

Black Cutworm and Damage to Corn Seedling (Vegetable)


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Black Deer Fly

Black Deer Fly (Stinging and Biting Arthopods)


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Black grass bug

Black grass bug Frank B. Peairs, Colorado State University


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Black Widow Spider - Underside

Black Widow Spider - Underside (Stinging and Biting Arthopods)


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Black Wooly Bear

Black Wooly Bear (Ornamental Plants)


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Blotch leafminer in corn

Blotch leafminer in corn Frank B. Peairs, Colorado State University


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Blue orchard bee

Blue orchard bee pollinating a zinnia. Photo by Scott Bauer.


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Boll Weevil

Adult Boll Weevil (Cotton)


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Boll weevil

Boll weevil on a cotton bud. Photo by Jack Dykinga


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Boll Weevil Larva and Pupa

Boll Weevil Larva and Pupa (Cotton)


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Boll Weevil Punctures

Boll Weevil Punctures (Cotton)


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Bollworm Attacking Boll

Bollworm Attacking Boll (Cotton)


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Bollworm Egg

Bollworm Egg (Cotton)


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Bollworm Moths and Pupae

Bollworm Moths and Pupae (Cotton)


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Bollworms - Size by Days

Bollworms - Size by Days (Cotton)


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Bombradier beetle

Bombradier beetle E. E. Nelson, Colorado State University


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Boxelder Bug

Boxelder Bug (Ornamental Plants)


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Boxwood Leaf Miner

Boxwood Leaf Miner (Ornamental Plants)


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Braconid Parasite Cocoons on Tobacco Hornworm

Braconid Parasite Cocoons on Tobacco Hornworm (Beneficial Insects)


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Bristly cutworm adult, Lacinipolia renigera

Bristly cutworm adult, Lacinipolia renigera John L. Capinera, Colorado State University


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Bronzed cutworm

Bronzed cutworm John L. Capinera, Colorado State University


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Brown Banded Cockroach

Brown Banded Cockroach (Household Insects)


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Brown lacewing

Brown lacewing Frank B. Peairs, Colorado State University


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Brown Stinkbug

Brown Stinkbug (Soybean)


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Buprestid beetle

Buprestid beetle E. E. Nelson, Colorado State University


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Cabbage looper, late-instar larvae

Cabbage looper, late-instar larvae John L. Capinera, Colorado State University


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Cabbage looper, mid-instar larvae

Cabbage looper, mid-instar larvae John L. Capinera, Colorado State University


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Cabbage looper, pre-pupae

Cabbage looper, pre-pupae John L. Capinera, Colorado State University


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Cabbage looper adult, Trichoplusia ni

Cabbage looper adult, Trichoplusia ni John L. Capinera, Colorado State University


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Cabbage looper pupae

Cabbage looper pupae Whitney S. Cranshaw, Colorado State University


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Cadelle Beetle - Adult

Cadelle Beetle - Adult (Stored Grain)


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Cadelle Beetle - Larva

Cadelle Beetle - Larva (Stored Grain)


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Callida decora

Callida decora (adult) preying on caterpillar Brazil


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Calophasia lunula, adult

Calophasia lunula, adult L. L. Berry, Colorado State University


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Calophasia lunula, larvae

Calophasia lunula, larvae L. L. Berry, Colorado State University


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Calosoma sp.

Calosoma sp. (larva) preying on velvetbean caterpillar Brazil


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Camel Cricket

Camel Cricket (Household Insects)


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Carpenter Ant

Carpenter Ant (Household Insects)


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Carolina grasshopper, Dissosteira carolina

Carolina grasshopper, Dissosteira carolina Whitney S. Cranshaw, Colorado State University


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Carrot beetle

Carrot beetle Frank B. Peairs, Colorado State University


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Case-making bagworm

Case-making bagworm E. E. Nelson, Colorado State University


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Case-making Clothes Moth

Case-making Clothes Moth (Stored Products)


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Catalpa Sphinx

Catalpa Sphinx (Shade/Forest)


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Catfacing - Plant Bug Injury

Catfacing - Plant Bug Injury (Fruit)


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Catolaccus grandis wasp

Catolaccu_grandis_wasp A female Catolaccus grandis wasp homes in on a boll weevil larva. This 3/8 inch parasitic wasp, a native of Mexico, inserts her ovipositor through the plastic film covering the individual rearing cell and immobilizes the larva. From the larva she withdraws nourishment sufficient to complete development of her eggs. Later, she or another female will revisit the boll weevil larva and deposit an egg next to it. The larva soon becomes an easy meal for a newly-hatched wasp larva. Photo by Scott Bauer.


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Cattle Grub

Cattle Grub (Livestock)


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Cattle Grub Damage to Hide

Cattle Grub Damage to Hide (Livestock)


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Cecropia moth, larvae

Cecropia moth, larvae E. E. Nelson, Colorado State University


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Cecropia moth = silkworm moth

Cecropia moth = silkworm moth E. E. Nelson, Colorado State University


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Celery looper larvae, Syngrapha falcifera

Celery looper larvae, Syngrapha falcifera John L. Capinera, Colorado State University


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Centipede

Centipede E. E. Nelson, Colorado State University


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Cerambycid stem borer of sunflower, larvae

Cerambycid stem borer of sunflower, larvae Frank B. Peairs, Colorado State University


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Ceratoma beetle

Ceratoma beetle CIAT, Colorado State University


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Cercropia moth, larvae

Cercropia moth, larvae E. E. Nelson, Colorado State University


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Certoma arcuata bean leaf beetle

Certoma arcuata bean leaf beetle (adult) Brazil


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Certoma arcuata bean leaf beetle

Certoma arcuata bean leaf beetle (drawing)


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Certoma trifurcata bean leaf beetle

Certoma trifurcata bean leaf beetle (adult) North America


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Certoma trifurcata bean leaf beetle

Certoma trifurcata bean leaf beetle (larva)


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Certoma trifurcata bean leaf beetle

Certoma trifurcata bean leaf beetle (drawing)


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Ceutorhynchus larvae and damage

Ceutorhynchus larvae and damage L. L. Berry, Colorado State University


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Ceutorhynchus litura

Ceutorhynchus litura L. L. Berry, Colorado State University


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Chicken Lice

Chicken Lice (Livestock)


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Chrysopa larva preying on soybean aphids

Chrysopa larva preying on soybean aphids China


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Chrysoperla sp., 1st instar, larva feeding on green peach aphid

Chrysoperla sp., 1st instar, larva feeding on green peach aphid Whitney S. Cranshaw, Colorado State University


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Cigarette Beetle on Damaged Cigar

Cigarette Beetle on Damaged Cigar (Stored Products)


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Citrus root weevil, Diaprepes

Citrus root weevil, Diaprepes Keith Weller.


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Claybacked cutworm adult, Agrotis gladiaria

Claybacked cutworm adult, Agrotis gladiaria John L. Capinera, Colorado State University


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Clover cutworm, adult

Clover cutworm, adult John L. Capinera, Colorado State University


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Clover cutworm, larvae

Clover cutworm, larvae John L. Capinera, Colorado State University


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Clover cutworm larvae, Scotogramma trifolii

Clover cutworm larvae, Scotogramma trifolii John L. Capinera, Colorado State University


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Clover looper adult on lawn, Caenurgina crassiuscula

Clover looper adult on lawn, Caenurgina crassiuscula Whitney S. Cranshaw, Colorado State University


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Codling moth, adult on apple

Codling moth, adult on apple E. E. Nelson, Colorado State University


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Codling Moth - Adult

Codling Moth - Adult (Fruit)


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Codling moth damage on apple

Codling moth damage on apple E. E. Nelson, Colorado State University


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Codling moth eggs

Codling moth eggs E. E. Nelson, Colorado State University


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Codling moth pheromone trap

Codling moth pheromone trap E. E. Nelson, Colorado State University


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Codling moths, trapped

Codling moths, trapped E. E. Nelson, Colorado State University


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Colaspis brunnea grape colaspis

Colaspis brunnea grape colaspis (adult) North America


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Colaspis brunnea grape colaspis

Colaspis brunnea grape colaspis (drawing) North America


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Coleomegilla maculata ladybeetle

Coleomegilla maculata ladybeetle (adult) North, Central and South America


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Coleomegilla maculata ladybeetle

Coleomegilla maculata ladybeetle (larva) North, Central and South America


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Colorado potato beetle, adult

Colorado potato beetle, adult E. E. Nelson, Colorado State University


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Colorado potato beetle

Colorado potato beetle Scott Bauer.


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Colorado Potato Beetle - Adult

Colorado Potato Beetle - Adult (Vegetable)


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Colorado Potato Beetle - Larva

Colorado Potato Beetle - Larva (Vegetable)


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Colorado potato beetle adult, Leptinotarsa decemlineata

Colorado potato beetle adult, Leptinotarsa decemlineata John L. Capinera, Colorado State University


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Colorado potato beetle egg mass

Colorado potato beetle egg mass Whitney S. Cranshaw, Colorado State University


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Colorado potato beetle larvae

Colorado potato beetle larvae John L. Capinera, Colorado State University


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Colorado potato beetle pupae

Colorado potato beetle pupae Whitney S. Cranshaw, Colorado State University


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Comstock Mealybug

Comstock Mealybug (Ornamental Plants)


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Conidiobolus obscurus on Russian wheat aphid

Conidiobolus obscurus on Russian wheat aphid Susan Halbert, Colorado State University


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Convergent lady beetles

Convergent lady beetles (Hippodamia convergens) Scott Bauer


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Copidosoma truncatellum, pupae packed in body of army cutworm host

Copidosoma truncatellum, pupae packed in body of army cutworm host John L. Capinera, Colorado State University


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Corn Earworm

Corn Earworm (Soybean)


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Corn Earworm

Corn Earworm (Corn)


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Corn earworm, larvae (small) on silks

Corn earworm, larvae (small) on silks Colorado State University


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Corn earworm, larvae on ear tip

Corn earworm, larvae on ear tip Colorado State University


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Corn earworm, larvae on leaf

Corn earworm, larvae on leaf Colorado State University


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Corn earworm, larvea in corn ear

Corn earworm, larvae in corn ear John L. Capinera, Colorado State University


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Corn earworm, pupae in corn ear

Corn earworm, pupae in corn ear John L. Capinera, Colorado State University


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Corn earworm

Corn earworm on an immature cotton boll. ARS PHOTO


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Corn Earworm - Sorghum

Corn Earworm - Sorghum (Alfalfa/Hay)


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Corn earworm larvae in sweetcorn

Corn earworm larvae in sweetcorn E. E. Nelson, Colorado State University


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Corn earworm moth

Corn earworm moth sips nectar from a night-blooming Gaura plant. Juan Lopez


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Corn earworm pupa

Corn earworm pupa Cross section of a tunnel with a corn earworm pupa. The Diapetimorpha introita wasp is preparing to lay an egg in the pupal tunnel. Photo by Scott Bauer.


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Corn earworm trap

Corn earworm trap E. E. Nelson, Colorado State University


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Corn leaf aphid

Corn leaf aphid Frank B. Peairs, Colorado State University


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Corn leaf aphids on stalk and ear of corn, Rhopalosiphum maidis

Corn leaf aphids on stalk and ear of corn, Rhopalosiphum maidis Frank B. Peairs, Colorado State University


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Corn rootworm adult damage

Corn rootworm adult damage E. E. Nelson, Colorado State University


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Cotton Aphid Damage to Leaves

Cotton Aphid Damage to Leaves (Cotton)


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Cotton Aphids and Predator

Cotton Aphids and Predator (Cotton)


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Cottony Cushion Scale

Cottony Cushion Scale (Ornamental Plants)


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Cowpea Curculio - Bean

Cowpea Curculio - Bean (Vegetable)


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Cowpea Weevil on Soybeans

Cowpea Weevil on Soybeans (Stored Products)


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Cross Striped Cabbage Worm

Cross Striped Cabbage Worm (Vegetable)


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Crown-feeding Weevil, Phrydiuchus tau

Crown-feeding Weevil, Phrydiuchus tau L. L. Berry, Colorado State University


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Cucumber beetle

Cucumber beetle Scott Bauer


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Cutworm

Cutworm (Tobacco)


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Cutworm damage

Cutworm damage Steve Krosky, Colorado State University


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Cutworms in alfalfa

Cutworms in alfalfa E. E. Nelson, Colorado State University


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Cynipid Gall on Water Oak

Cynipid Gall on Water Oak (Shade/Forest)


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Cyphocleonus achates, adult

Cyphocleonus achates, adult L. L. Berry, Colorado State University


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Cyphocleonus achates, adult

Cyphocleonus achates, adult L. L. Berry, Colorado State University


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Cyphocleonus achates pupae

Cyphocleonus achates pupae L. L. Berry, Colorado State University


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D. rapae

D. rapae Frank B. Peairs, Colorado State University


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D. rapae, mummy of Russian wheat aphid

D. rapae, mummy of Russian wheat aphid Frank B. Peairs, Colorado State University


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Damsel bug, adult on potato leaf, Nabis sp.

Damsel bug, adult on potato leaf, Nabis sp. Whitney S. Cranshaw, Colorado State University


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Damselflies, mating pair, Enallgama sp.

Damselflies, mating pair, Enallgama sp. Howard E. Evans, Colorado State University


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Damselflies, ovipositing on stem, Enallgama sp.

Damselflies, ovipositing on stem, Enallgama sp. Howard E. Evans, Colorado State University


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Damselfly adult, Enallgama sp.

Damselfly adult, Enallgama sp. Whitney S. Cranshaw, Colorado State University


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Dark-sided cutworm, larvae

Dark-sided cutworm, larvae Frank B. Peairs, Colorado State University


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Dark-sided cutworm, larvae

Dark-sided cutworm, larvae John L. Capinera, Colorado State University


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Dark-sided cutworm adult, Euxoa messoria

Dark-sided cutworm adult, Euxoa messoria John L. Capinera, Colorado State University


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Day-old sawfly larvae

Day-old sawfly larvae devour a melaleuca leaf in skirmish-line fashion. Photo by Jason Stanley.


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Dectes texanus weed borer

Dectes texanus weed borer (adult)


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Dectes texanus weed borer

Dectes texanus weed borer (drawing)


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Delia platura seedcorn maggot

Delia platura seedcorn maggot (larvae) North America


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Delia platura seedcorn maggot

Delia platura seedcorn maggot (larvae) North America


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Deodar Weevil Larva

Deodar Weevil Larva (Shade/Forest)


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Dermestid

Dermestid (troqoderma glabrum) (Herbst) Grain Beetle - Larvae (Stored Products)


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Dermestid

Dermestid (troqoderma glabrum) (Herbst) Grain Beetle - Adult (Stored Products)


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Dermestid carpet beetle

Dermestid carpet beetle E. E. Nelson, Colorado State University


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Diabrotica undecimpunctata southern corn

Diabrotica undecimpunctata southern corn rootworm (adult) North America


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Diabrotica undecimpunctata southern corn

Diabrotica undecimpunctata southern corn rootworm (drawing) North America


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Diamond Bak Moth - Larva

Diamond Bak Moth - Larva (Vegetable)


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Diamondback moth larvae

Diamondback moth larvae feed on a cabbage leaf. Doug Wilson


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Diamondback moth pupae, Plutella xylostella

Diamondback moth pupae, Plutella xylostella Whitney S. Cranshaw, Colorado State University


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Diaraetiella rapae, full grown larvae exposed in aphid host

Diaraetiella rapae, full grown larvae exposed in aphid host Whitney S. Cranshaw, Colorado State University


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Diaraetiella rapae adult parasitizing Russian wheat aphid

Diaraetiella rapae adult parasitizing Russian wheat aphid Frank B. Peairs, Colorado State University


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Dilling - Corn

Dilling - Corn (Corn)


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Dingy cutworm adult, Feltia ducens

Dingy cutworm adult, Feltia ducens John L. Capinera, Colorado State University


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Dingy cutworm larvae

Dingy cutworm larvae John L. Capinera, Colorado State University


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Diseased Caterpillar

Diseased Caterpillar (Soybean)


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Dolichopodid adult

Dolichopodid adult Whitney S. Cranshaw, Colorado State University


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Dolycoris baccarum stink bug

Dolycoris baccarum stink bug (adult) China


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Dolycoris baccarum stink bug

Dolycoris baccarum stink bug (drawing) China


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Dolycoris stink bug

Dolycoris stink bug (egg mass) China


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Doryphorophaga doryphoyrae, adult parasite of potato beetle

Doryphorophaga doryphoyrae, adult parasite of potato beetle John L. Capinera, Colorado State University


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Dragonflies, mating pair, Gomphidae sp.

Dragonflies, mating pair, Gomphidae sp. Howard E. Evans, Colorado State University


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Dragonfly

Dragonfly E. E. Nelson, Colorado State University


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Dragonfly, Libellula luctuosa

Dragonfly, Libellula luctuosa Howard E. Evans, Colorado State University


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Dusky cutworm adult, Agrotis venerabilis

Dusky cutworm adult, Agrotis venerabilis John L. Capinera, Colorado State University


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Earwig

Earwig (Household Insects)


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Earwig

Earwig E. E. Nelson, Colorado State University


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Earworm Damage to Young Corn

Earworm Damage to Young Corn (Corn)


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Eastern Tent Caterpillar

Eastern Tent Caterpillar (Shade/Forest)


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ECB, larvae in green stalk

ECB in green stalk Colorado State University


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ECB, larvae in stalk

ECB larvae in stalk Colorado State University


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ECB adult

ECB adult Colorado State University


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ECB egg mass hatching

ECB egg mass hatching Colorado State University


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ECB egg mass next to midrib

ECB egg mass next to midrib Colorado State University


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ECB pupae on leaf

ECB pupae on leaf Colorado State University


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ECB shotholes on leaf

ECB shotholes on leaf Colorado State University


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Egg Mass - Chicken Lice

Egg Mass - Chicken Lice (Livestock)


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Elasmopalpus lignosellus lesser cornstal

Elasmopalpus lignosellus lesser cornstalk borer (adults) North, Central and South America


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Elasmopalpus lignosellus lesser cornstal

Elasmopalpus lignosellus lesser cornstalk borer (drawing) North, Central and South America


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Elasmopalpus lignosellus lesser cornstal

Elasmopalpus lignosellus lesser cornstalk borer (larva) North, Central and South America


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Elasmopalpus lignosellus lesser cornstal

Elasmopalpus lignosellus lesser cornstalk borer (drawing) North, Central and South America


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Elateridae larvae wireworms North Americ

Elateridae larvae wireworms North America


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Elateridae larvae wireworms

Elateridae larvae wireworms (drawing) North America


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Elm leaf beetle

Elm leaf beetle (E. E. Nelson, Colorado State University)


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Elm Leaf Beetle - Adult

Elm Leaf Beetle - Adult (Shade/Forest)


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Elm Leaf Beetle - Larva

Elm Leaf Beetle - Larva (Shade/Forest)


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Empoasca abrupta, leaf stippling on potato

Empoasca abrupta, leaf stippling on potato (Whitney S. Cranshaw, Colorado State University)


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Empoasca adult on bean leaf

Empoasca adult on bean leaf (Frank B. Peairs, Colorado State University)


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Empoasca fabae potato leaf hopper

Empoasca fabae potato leaf hopper (adult) North America


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Empoasca fabae potato leaf hopper

Empoasca fabae potato leaf hopper (drawing) North America


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Entomophthora-killed grasshoppers on grass

Entomophthora-killed grasshoppers on grass (John L. Capinera, Colorado State University)


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Epicauta andersoni, adult

Epicauta andersoni, adult (Lou B. Bjostad, Colorado State University)


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Epicauta atomaria blister beetle

Epicauta atomaria blister beetle (adult) Brazil


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Epicauta atomaria blister beetle

Epicauta atomaria blister beetle (drawing) Brazil


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Epicauta fabricii, adult

Epicauta fabricii, adult (John L. Capinera, Colorado State University)


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Epicauta ferruginea, adult on flower

Epicauta ferruginea, adult on flower (John L. Capinera, Colorado State University)


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Epicauta immaculata, adult

Epicauta immaculata, adult (John L. Capinera, Colorado State University)


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Epicauta immaculata, adult

Epicauta immaculata, adult (John L. Capinera, Colorado State University)


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Epicauta lemniscata, adult

Epicauta lemniscata, adult (John L. Capinera, Colorado State University)


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Epicauta lemniscata, mass of adults on alfalfa

Epicauta lemniscata, mass of adults on alfalfa (John L. Capinera, Colorado State University)


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Epicauta maculata, adult

Epicauta maculata, adult John L. Capinera, Colorado State University


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Epicauta pennsylvanica, adult

Epicauta pennsylvanica, adult John L. Capinera, Colorado State University


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Epicauta sericans, adults

Epicauta sericans, adults John L. Capinera, Colorado State University


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Epicauta vittata striped blister beetle

Epicauta vittata striped blister beetle (adult) North America


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Epicauta vittata striped blister beetle

Epicauta vittata striped blister beetle (drawing) North America


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Epilachna varivestis Mexican bean beetle

Epilachna varivestis Mexican bean beetle (eggs) North America


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Epilachna varivestis Mexican bean beetle

Epilachna varivestis Mexican bean beetle (drawing) North America


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Epilachna varivestis Mexican bean beetle

Epilachna varivestis Mexican bean beetle (larva)


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Epilachna varivestis Mexican bean beetle

Epilachna varivestis Mexican bean beetle (pupa)


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Epilachna varivestis Mexican bean beetle

Epilachna varivestis Mexican bean beetle (adult)


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Epinotia aporema soybean axils worm

Epinotia aporema soybean axils worm (larva) South America


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Epinotia aporema soybean axils worm

Epinotia aporema soybean axils worm (drawing) South America


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Episyron 5-notatus, adult with spider prey

Episyron 5-notatus, adult with spider prey Howard E. Evans, Colorado State University


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Erinnyia fungus on Russian wheat aphid

Erinnyia fungus on Russian wheat aphid Frank B. Peairs, Colorado State University


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Erynia neoaphidis on Russian wheat aphid

Erynia neoaphidis on Russian wheat aphid Susan Halbert, Colorado State University


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Erynia neoaphidis on Russian wheat aphid

Erynia neoaphidis on Russian wheat aphid Susan Halbert, Colorado State University


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European Corn Borer

European Corn Borer (Corn)


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European earwig, adult male & female on flower, Forficula auricularia

European earwig, adult male & female on flower, Forficula auricularia Whitney S. Cranshaw, Colorado State University


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European mantid, adult male

European mantid, adult male Whitney S. Cranshaw, Colorado State University


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European mantid eating grasshopper

European mantid eating grasshopper Whitney S. Cranshaw, Colorado State University


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Euschistus servus brown stink bug

Euschistus servus brown stink bug (adult) America


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Euschistus servus brown stink bug

Euschistus servus brown stink bug (drawing) America


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Face Flies Damage to Hide

Face Flies Damage to Hide (Livestock)


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Fall armyworm, larvae

Fall armyworm, larvae Frank B. Peairs, Colorado State University


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Fall armyworm adult, Spodoptera fugiperda

Fall armyworm adult, Spodoptera fugiperda John L. Capinera, Colorado State University


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Fall armyworm larvae

Fall armyworm larvae John L. Capinera, Colorado State University


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Fall armyworm larval cannibalism

Fall armyworm larval cannibalism Frank B. Peairs, Colorado State University


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Fall Armyworms

Fall Armyworms (Alfalfa/Hay)


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Fall Webworm - Damage

Fall Webworm - Damage (Shade/Forest)


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Fall Webworm Larvae

Fall Webworm Larvae (Shade/Forest)


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False chinch bug, adult

False chinch bug, adult E. E. Nelson, Colorado State University


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False chinch bugs covering canola seed pods, Nysius sp.

False chinch bugs covering canola seed pods, Nysius sp. Whitney S. Cranshaw, Colorado State University


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Fire Ant - Typical Mound in Yard

Fire Ant - Typical Mound in Yard (Stinging and Biting Arthopods)


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Firebrat

Firebrat (Household Insects)


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Flat Grain Beetle

Flat Grain Beetle (Stored Products)


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Flea Beetle

- Flea Beetle H. F. Schwartz, Colorado State University


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Flea beetle, larval injury to potato, external scarring

Flea beetle, larval injury to potato, external scarring Whitney S. Cranshaw, Colorado State University


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Flea beetle, larval tunneling of potato tuber

Flea beetle, larval tunneling of potato tuber Whitney S. Cranshaw, Colorado State University


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Flea beetle on bean leaf

Flea beetle on bean leaf Frank B. Peairs, Colorado State University


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Flour Beetle

Flour Beetle (Stored Grain)


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Flour beetle, American Black

Flour beetle, American Black Colorado State University


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Flower beetles

Flower beetles E. E. Nelson, Colorado State University


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Flower thrips larvae, Frankliniella sp.

Flower thrips larvae, Frankliniella sp. F. B. Peairs, Colorado State University


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Formosan subterranean termites

Formosan subterranean termites are feeding on Sudan-red-stained filter paper. Tracking the termites stained with this dye allows researchers to estimate their foraging range and population numbers. Photo by Scott Bauer.


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Formosan termite alates

Formosan termite alates also known as swarmers, captured on a sticky trap used to monitor populations. Photo by Scott Bauer.


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Fowl Mite - Infestation Around Vent

Fowl Mite - Infestation Around Vent (Livestock)


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Furniture Carpet Beetle

Furniture Carpet Beetle (Stored Products)


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Furniture Carpet Beetle Damage

Furniture Carpet Beetle Damage (Stored Products)


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Fusarium sp. on Russian wheat aphid

Fusarium sp. on Russian wheat aphid Susan Halbert, Colorado State University


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German Cockroach

German Cockroach (Household Insects)


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Glassy cutworm, larvae

Glassy cutworm, larvae Frank B. Peairs, Colorado State University


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Glassy cutworm larvae, Crymodes devastator

Glassy cutworm larvae, Crymodes devastator John L. Capinera, Colorado State University


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Grammopsoides rufipes stem borer

Grammopsoides rufipes stem borer (adult) Peru


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Grammopsoides rufipes stem borer

Grammopsoides rufipes stem borer (drawing) Peru


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Granary Weevil - Wheat

Granary Weevil - Wheat (Stored Grain)


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== Grape == mealybug,_adult Grape mealybug, adult E. E. Nelson, Colorado State University


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Grape Leaf Beetle - Larva

Grape Leaf Beetle - Larva (Fruit)


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Grape leafhopper, adult

Grape leafhopper, adult E. E. Nelson, Colorado State University


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Grape leafhopper, damage

Grape leafhopper, damage E. E. Nelson, Colorado State University


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Grape leafhopper, damage

Grape leafhopper, damage E. E. Nelson, Colorado State University


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Grape mealybug, damage

Grape mealybug, damage E. E. Nelson, Colorado State University


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Grape mealybug, damage

Grape mealybug, damage E. E. Nelson, Colorado State University


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Grape Root Borer

Grape Root Borer (Fruit)


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Grasshopper, adult

Grasshopper, adult John L. Capinera, Colorado State University


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Grasshopper damage on pear

Grasshopper damage on pear E. E. Nelson, Colorado State University


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Grasshopper eggs

Grasshopper eggs John L. Capinera, Colorado State University


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Grasshopper ovipositing

Grasshopper ovipositing John L. Capinera, Colorado State University


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Grasshopper species (common)

Grasshopper species (common) J. L. Capinera, Colorado State University


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Grasshoppers

- Grasshoppers H. F. Schwartz, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers

Grasshoppers John L. Capinera, Colorado State University


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Grasshoppers resting on vegetation

Grasshoppers resting on vegetation Whitney S. Cranshaw, Colorado State University


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Gray seed weevil

Gray seed weevil Frank B. Peairs, Colorado State University


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Green Cloverworm

Green Cloverworm (Soybean)


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Green cloverworm adult, Plathypena scabra

Green cloverworm adult, Plathypena scabra John L. Capinera, Colorado State University


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Green darner, Anax junius

Green darner, Anax junius Whitney S. Cranshaw, Colorado State University


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Green darner ovipositing at water's edge

Green darner ovipositing at water's edge Whitney S. Cranshaw, Colorado State University


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Green June Beetle - Larva

Green June Beetle - Larva (Alfalfa/Hay)


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Green June Beetle - Peach

Green June Beetle - Peach (Fruit)


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== Green lacewing == larva Green lacewing larva attacks a 'cabbage' looper larva. Photo by Jack Dykinga.


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Green lacewing, adult

Green lacewing, adult E. E. Nelson, Colorado State University


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Green lacewing, adult

Green lacewing, adult Frank B. Peairs, Colorado State University


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Green lacewing adult, Chrysopa spp.

Green lacewing adult, Chrysopa spp. Frank B. Peairs, Colorado State University


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Green lacewing eggs, Chrysoperla sp.

Green lacewing eggs, Chrysoperla sp. John L. Capinera, Colorado State University


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Green lacewing larva

Green lacewing larva dines on whitefly nymphs. Photo by Jack Dykinga


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Green peach aphid, winged adult with deformed wings, Myzus persica

Green peach aphid, winged adult with deformed wings, Myzus persicae Whitney S. Cranshaw, Colorado State University


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Green peach aphid on petiole

Green peach aphid on petiole E. G. Ruppel, Colorado State University


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Green peach aphid on plum

Green peach aphid on plum E. E. Nelson, Colorado State University


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Green peach aphid on wild plum

Green peach aphid on wild plum E. E. Nelson, Colorado State University


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Green peach aphids, vector of various beet viruses

Green peach aphids, vector of various beet viruses E. G. Ruppel, Colorado State University


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Green stink bug

Green stink bug Frank B. Peairs, Colorado State University


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Greenbug, Schizaphis graminum

Greenbug, Schizaphis graminum Frank B. Peairs, Colorado State University


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Greenbugs on forage sorghum

Greenbugs on forage sorghum Frank B. Peairs, Colorado State University


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Grey sunflower seed weevil adult, Smicronyx sordidus

Grey sunflower seed weevil adult, Smicronyx sordidus Frank B. Peairs, Colorado State University


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Ground Beetle - Fiery Hunter

Ground Beetle - Fiery Hunter (Beneficial Insects)


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Ground mantid, Litaneutria minor

Ground mantid, Litaneutria minor Whitney S. Cranshaw, Colorado State University


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Grub

Grub (Plectris aliena) Chapin on Sweet Potato (Vegetable)


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H. v. larvae

H. v. larvae Frank B. Peairs, Colorado State University


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Hagmoth

Hagmoth Stinging and Biting Arthopods


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Harlequin Bug

Harlequin Bug (Vegetable)


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Harlequin bug adult, Murgantia histrionica

Harlequin bug adult, Murgantia histrionica Whitney S. Cranshaw, Colorado State University


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Harlequin bug nymphs and associated damage

Harlequin bug nymphs and associated damage Whitney S. Cranshaw, Colorado State University


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Head Capsule Female Face Fly

Head Capsule Female Face Fly (Livestock)


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Head Capsule Female House Fly

Head Capsule Female House Fly (Livestock)


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Head Capsule Male Face Fly

Head Capsule Male Face Fly (Livestock)


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Head Capsule Male House Fly

Head Capsule Male House Fly (Livestalk)


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Hedylepta indicata legume leaf roller

Hedylepta indicata legume leaf roller (larva) Central and South America and Asia


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Hedylepta indicata legume leaf roller

Hedylepta indicata legume leaf roller (drawing) Central and South America and Asia


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Heliothis zea corn earworm

Heliothis zea corn earworm (adult) North, Central and South America


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Heliothis zea corn earworm

Heliothis zea corn earworm (drawing) North, Central and South America


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Heliothis zea corn earworm

Heliothis zea corn earworm (drawing) North, Central and South America


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Heliothis zea corn earworm

Heliothis zea corn earworm (larva) North, Central and South America


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Heliothis zea infected with Nuclear poly

Heliothis zea infected with Nuclear polyhedrosis virus USA


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Hessian fly

Hessian fly About one-eighth-inch long, the female Hessian fly emits a sex pheromone from her ovipositor to attract males. Photo by Scott Bauer


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Hessian fly damage in wheat

Hessian fly damage in wheat Colorado State University


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Hickory Shuckworm

Hickory Shuckworm (Pecan)


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Hippodamia convergens, adult

Hippodamia convergens, adult Frank B. Peairs, Colorado State University


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Hippodamia convergens, pre-pupae

Hippodamia convergens, pre-pupae Whitney S. Cranshaw, Colorado State University


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Hippodamia convergens, recently molted adult with pupal skins

Hippodamia convergens, recently molted adult with pupal skins Whitney S. Cranshaw, Colorado State University


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Hippodamia sp., eggs in greenbug colony

Hippodamia sp., eggs in greenbug colony Whitney S. Cranshaw, Colorado State University


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Hippodamia sp., larvae

Hippodamia sp., larvae John L. Capinera, Colorado State University


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Hornworm

Hornworm (Tobacco)


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Hornworm, larvae

Hornworm, larvae E. E. Nelson, Colorado State University


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Horsefly - Life Cycle

Horsefly - Life Cycle (Household Insects)


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Imported Cabbage Worm

Imported Cabbage Worm (Vegetable)


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Imported cabbage worm, larvae

Imported cabbage worm, larvae E. E. Nelson, Colorado State University


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Indian meal moth, adult

Indian meal moth, adult Colorado State University


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Indian Meal Moth - Adult and Larvae

Indian Meal Moth - Adult and Larvae (Stored Products)


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Indian meal moth and larvae

Indian meal moth and larvae Colorado State University


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Io Caterpillar

Io Caterpillar (Stinging and Biting Arthopods)


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Japanese Beetle

Japanese Beetle (Fruit)


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Jerusalem cricket

Jerusalem cricket E. E. Nelson, Colorado State University


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Jerusalem cricket

Jerusalem cricket E. E. Nelson, Colorado State University


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Katydid, adult

Katydid, adult E. E. Nelson, Colorado State University


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Lacebug - Adults

Lacebug - Adults (Ornamental Plants)


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Lacebug Damage - Azalea

Lacebug Damage - Azalea (Ornamental Plants)


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Lacewing

Lacewing (Beneficial Insects)


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Lacewing, adult

Lacewing, adult Colorado State University


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Lacewing, adult

Lacewing, adult Frank B. Peairs, Colorado State University


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Lacewing larvae (antlion)

Lacewing larvae (antlion) Colorado State University


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== Lady == beetles,_pair_of_P-14 Lady beetles, pair of P-14 Frank B. Peairs, Colorado State University


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== Lady == beetles,_pair_of_sevenspotted_(C-7),_Coccinella_septempunctata Lady beetles, pair of sevenspotted (C-7), Coccinella septempunctata Frank B. Peairs, Colorado State University


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Lady beetle, adult

Lady beetle, adult Colorado State University


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Lady beetle, adult, Anatis mali

Lady beetle, adult, Anatis mali Whitney S. Cranshaw, Colorado State University


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Lady beetle, egg mass

Lady beetle, egg mass Colorado State University


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Lady beetle, larvae

Lady beetle, larvae Colorado State University


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Lady beetle, pupae

Lady beetle, pupae Whitney S. Cranshaw, Colorado State University


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Lady beetle (Teneral) emerging from pupae

Lady beetle (Teneral) emerging from pupae Whitney S. Cranshaw, Colorado State University


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Lady beetle adults, four species of

Lady beetle adults, four species of Frank B. Peairs, Colorado State University


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Lady beetle attached to cocoon of its parasite, Perillitus sp.

Lady beetle attached to cocoon of its parasite, Perillitus sp. Frank B. Peairs, Colorado State University


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Lady beetles on Russian wheat aphid

Lady beetles on Russian wheat aphid Frank B. Peairs, Colorado State University


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Ladybird beetle, larvae

Ladybird beetle, larvae E. E. Nelson, Colorado State University


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Ladybird Beetle - Adult

Ladybird Beetle - Adult (Beneficial Insects)


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Ladybird Beetle - Larva

Ladybird Beetle - Larva (Beneficial Insects)


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Lampyrid beetle

Lampyrid beetle E. E. Nelson, Colorado State University


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Larger Elm Leaf Beetle

Larger Elm Leaf Beetle Shade/Forest


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Larinus minutus

Larinus minutus L. L. Berry, Colorado State University


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Leaf Miner

- Leaf Miner H. F. Schwartz, Colorado State University


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Leaf miner, corn blotch

Leaf miner, corn blotch Colorado State University


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Leaf miner tracks on bean leaf

Leaf miner tracks on bean leaf H. F. Schwartz, Colorado State University


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Leaf-cutting ants

Leaf-cutting ants such as this foraging worker of Atta cephalotes, are the primary herbivores of tropical areas such as Central America. they can be serious agricultural pests. Photo by Scott Bauer.


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Leaf-Footed Bug

Leaf-Footed Bug (Vegetable)


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Leaf-footed bug, adult

Leaf-footed bug, adult E. E. Nelson, Colorado State University


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Leaf-footed bug, adult

Leaf-footed bug, adult E. E. Nelson, Colorado State University


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Leafhopper

- Leafhopper H. F. Schwartz, Colorado State University


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Leafhopper adult on bean leaf

Leafhopper adult on bean leaf H. F. Schwartz, Colorado State University


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Leafhopper on bean leaf

Leafhopper on bean leaf H. F. Schwartz, Colorado State University


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Leguminivora glycinivorella soybean pod

Leguminivora glycinivorella soybean pod borer (adult) East Asia


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Leguminivora glycinivorella soybean pod

Leguminivora glycinivorella soybean pod borer (drawing) East Asia


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Leguminivora glycinivorella soybean pod

Leguminivora glycinivorella soybean pod borer (larva) East Asia


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Leguminivora glycinivorella soybean pod

Leguminivora glycinivorella soybean pod borer (drawing) East Asia


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Lesion Nematode

Lesion Nematode H. F. Schwartz, Colorado State University


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Lesser Grain Borer

Lesser Grain Borer (Stored Grain)


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Lima Bean Vine Borer

Lima Bean Vine Borer (Vegetable)


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Liriomyza trifolii

Liriomyza trifolii


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Locust Borer

Locust Borer (Shade/Forest)


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Long-horned beetle

Long-horned beetle E. E. Nelson, Colorado State University


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Looper

Looper (Soybean)


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Looper

Looper (Tobacco)


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Looper - Cabbage

Looper - Cabbage


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Loopers and Damaged Leaf

Loopers and Damaged Leaf (Cotton)


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Loxagrotis albicosta larvae on bean pod

Loxagrotis albicosta larvae on bean pod John L. Capinera, Colorado State University


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Lubber Grasshopper

Lubber Grasshopper (Ornamental Plants)


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Lygus lineolaris tarnished plant bug

Lygus lineolaris tarnished plant bug (adult) North America


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Lygus lineolaris tarnished plant bug

Lygus lineolaris tarnished plant bug (drawing) North America


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Lygus sp. plant bug, adult

Lygus sp. plant bug, adult Frank B. Peairs, Colorado State University


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Maggot on Cabbage Roots

Maggot on Cabbage Roots (Vegetable)


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Maggots

- Maggots H. F. Schwartz, Colorado State University


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Maize weevil

Maize weevil


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Mantid

Mantid E. E. Nelson, Colorado State University


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Mantid displaying eye spot markings

Mantid displaying eye spot markings Howard E. Evans, Colorado State University


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Mantid USA

Mantid USA


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Margined Blister Beetles

Margined Blister Beetles (Soybean)


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Maruca testulalis

Maruca testulalis (drawing) Central and South America and Africa


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Maruca testulalis

Maruca testulalis (larva) Central and South America and Africa


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Maruca testulalis

Maruca testulalis


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Masked hunter adult, Reduvius personatus

Masked hunter adult, Reduvius personatus Frank B. Peairs, Colorado State University


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Masked hunter nymph covered with sawdust, Reduvius personatus

Masked hunter nymph covered with sawdust, Reduvius personatus Whitney S. Cranshaw, Colorado State University


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Mealworms - Yellow and Dark

Mealworms - Yellow and Dark (Stored Grain)


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Mealybug - Coleus

Mealybug - Coleus (Ornamental Plants)


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Medfly

Medfly feeding on a cotton wick soaked with a bait-dye mixture. Photo by Scott Bauer.


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Medfly pumps

Medfly pumps A female medfly pumps eggs through her ovipositor into the soft outer layers of a ripe coffee berry. Photo by Scott Bauer


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Melaleuca leaf weevils

Melaleuca leaf weevils Melaleuca leaf weevils, Oxyops vitiosa, were released this year in the Florida Everglades as a biological control of melaleuca trees. Photo by Gary Buckingham


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Melaleuca sawfly adult

Melaleuca sawfly adult A melaleuca sawfly adult prepares to deposit eggs on a melaleuca leaf. Photo by Jason Stanley


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Melanchra picta, larvae

Melanchra picta, larvae John L. Capinera, Colorado State University


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Melanoplus bivattatus, adult female ovipositing

Melanoplus bivattatus, adult female ovipositing John L. Capinera, Colorado State University


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Melanoplus differentialis differential g

Melanoplus differentialis differential grasshopper (adult) North America


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Melanoplus differentialis differential g

Melanoplus differentialis differential grasshopper (drawing) North America


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Melanotrichus coagulatas damaging Quinoa seedlings

Melanotrichus coagulatas damaging Quinoa seedlings Whitney S. Cranshaw, Colorado State University


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Melanotrichus coagulatus, mirid pest of Quinoa

Melanotrichus coagulatus, mirid pest of Quinoa Frank B. Peairs, Colorado State University


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Meloe laevis, male and female

Meloe laevis, male and female John L. Capinera, Colorado State University


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Meloe laevis, mating pair

Meloe laevis, mating pair Frank B. Peairs, Colorado State University


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Mermis nigrescens, eggs

Mermis nigrescens, eggs John L. Capinera, Colorado State University


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Mermis nigrescens, emerged from grasshopper

Mermis nigrescens, emerged from grasshopper John L. Capinera, Colorado State University


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Mermis nigrescens adult on grass

Mermis nigrescens adult on grass John L. Capinera, Colorado State University


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Mermis nigrescens juveniles dissected from grasshopper

Mermis nigrescens juveniles dissected from grasshopper John L. Capinera, Colorado State University


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Mermithid grasshopper

Mermithid grasshopper John L. Capinera, Colorado State University


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Metzneria larvae

Metzneria larvae L. L. Berry, Colorado State University


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Mexican Bean Beetle

Mexican Bean Beetle H. F. Schwartz, Colorado State University


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Mexican Bean Beetle

Mexican Bean Beetle (Soybean)


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Mexican Bean Beetle

Mexican Bean Beetle (Vegetable)


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Mexican bean beetle, adult on bean

Mexican bean beetle, adult on bean H. F. Schwartz, Colorado State University


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Mexican bean beetle, damage to bean canopy

Mexican bean beetle, damage to bean canopy Frank B. Peairs, Colorado State University


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Mexican bean beetle, egg masses and larvae on bean leaves

Mexican bean beetle, egg masses and larvae on bean leaves H. F. Schwartz, Colorado State University


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Mexican bean beetle, eggs

Mexican bean beetle, eggs Frank B. Peairs, Colorado State University


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Mexican bean beetle, larvae

Mexican bean beetle, larvae E. E. Nelson, Colorado State University


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Mexican bean beetle, larvae (U. of Nebraska Entomology)

Mexican bean beetle, larvae (U. of Nebraska Entomology) J. Kalisch, Colorado State University


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Mexican bean beetle, larvae on bean leaf

Mexican bean beetle, larvae on bean leaf H. F. Schwartz, Colorado State University


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Mexican bean beetle, pupae

Mexican bean beetle, pupae John L. Capinera, Colorado State University


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Mexican bean beetle, pupae

Mexican bean beetle, pupae Oregon State U., Colorado State University


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Mexican bean beetle, teneral adult

Mexican bean beetle, teneral adult Whitney S. Cranshaw, Colorado State University


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Mexican bean beetle adult, Epilachna varivestis

Mexican bean beetle adult, Epilachna varivestis John L. Capinera, Colorado State University


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Mexican bean beetle adult on bean leaf

Mexican bean beetle adult on bean leaf Frank B. Peairs, Colorado State University


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Mexican bean beetle egg masses

Mexican bean beetle egg masses G. L. Hein, Colorado State University


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Mexican bean beetle feeding damage on bean leaves

Mexican bean beetle feeding damage on bean leaves H. F. Schwartz, Colorado State University


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Mexican bean beetle larva

Mexican bean beetle larva A Mexican bean beetle larva-a devastating pest of snap and soybeans-becomes a meal for the spined soldier bug instead. The bug's pheromone, discovered by entomologist Jeffrey Aldrich at Beltsville, MD., may help farmers enlist its help in controlling many pest insects.


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Mexican bean beetles adult (U. of Nebraska Entomology)

<b)Mexican bean beetles adult (U. of Nebraska Entomology) J. Kalisch, Colorado State University


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Mexican fruit flies

Mexican fruit flies Mexican fruit flies laying eggs in grapefruit before a test of the reduced-oxygen treatment. Photo by Jack Dykinga


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Mexican fruit fly

Mexican fruit fly In grapefruit as well as many other fruits, one female Mexican fruit fly can deposit large numbers of eggs: up to 40 eggs at a time, 100 or more a day, and about 2,000 over her life span. Photo by Jack Dykinga


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Microplitis demolitor parasitizing corn

Microplitis demolitor parasitizing corn earworm Brazil


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Migratory grasshopper adult, Melanoplus sanguinepes

Migratory grasshopper adult, Melanoplus sanguinepes Whitney S. Cranshaw, Colorado State University


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Mite, Blister; damage to vine maple

Mite, Blister; damage to vine maple H. J. Larsen, Colorado State University


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Mite, Brown spider, on apple

Mite, Brown spider, on apple E. E. Nelson, Colorado State University


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Mite, Brown wheat

Mite, Brown wheat Frank B. Peairs, Colorado State University


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Mite, Brown wheat, Petrobia latens

Mite, Brown wheat, Petrobia latens Frank B. Peairs, Colorado State University


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Mite, Brown wheat mite eggs

Mite, Brown wheat mite eggs Frank B. Peairs, Colorado State University


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Mite, European red spider

Mite, European red spider E. E. Nelson, Colorado State University


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Mite, European red spider + predator

Mite, European red spider + predator E. E. Nelson, Colorado State University


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Mite, European red spider on apple

Mite, European red spider on apple E. E. Nelson, Colorado State University


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Mite, Rust spider damage on pear

Mite, Rust spider damage on pear E. E. Nelson, Colorado State University


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Mite, Spider; damage on apple

Mite, Spider; damage on apple E. E. Nelson, Colorado State University


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Mite, Spider; damage on pear

Mite, Spider; damage on pear E. E. Nelson, Colorado State University


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Mite, Spider; on field corn

Mite, Spider; on field corn E. E. Nelson, Colorado State University


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Mite, Tropical spider; necrosis to bean leaves

Mite, Tropical spider; necrosis to bean leaves H. F. Schwartz, Colorado State University


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Mite, TSM

Mite, TSM Colorado State University


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Mite, Two-spotted spider

Mite,_Two-spotted spider E. E. Nelson, Colorado State University


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Mite, Two-spotted spider; + predator

Mite, Two-spotted spider; + predator E. E. Nelson, Colorado State University


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Mite, Wheat curl

Mite, Wheat curl Frank B. Peairs, Colorado State University


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Mite damage up past ears

Mite damage up past ears Colorado State University


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Mite damaged field

Mite damaged field Colorado State University


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Mite web on leaf

Mite web on leaf Colorado State University


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Mites, Banks grass

Mites, Banks grass Colorado State University


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Mites, Banks grass

Mites, Banks grass Colorado State University


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Mites, Banks grass, dispersing from tip of grass blade

Mites, Banks grass, dispersing from tip of grass blade Whitney S. Cranshaw, Colorado State University


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Mites, Banks grass, Oligonychus pratensis

Mites, Banks grass, Oligonychus pratensis Frank B. Peairs, Colorado State University


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Mites, Banks grass, with eggs

Mites, Banks grass, with eggs Frank B. Peairs, Colorado State University


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Mites, Red spider and webbing

Mites, Red spider and webbing CIAT, Colorado State University


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Mites, Spider

- Mites, Spider H. F. Schwartz, Colorado State University


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Mites, Spider; on Colorado blue spruce

Mites, Spider on Colorado blue spruce E. E. Nelson, Colorado State University


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Mites, Spider; on Colorado blue spruce

Mites, Spider; on Colorado blue spruce E. E. Nelson, Colorado State University


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Mites, Two-spotted spider; on apple

Mites, Two-spotted spider; on apple E. E. Nelson, Colorado State University


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Mites killed this field

Mites killed this field Colorado State University


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Mites right/controlled left

Mites right/controlled left Colorado State University


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Mole cricket, adult

Mole cricket, adult John L. Capinera, Colorado State University


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Monarch butterfly, adult

Monarch butterfly, adult E. E. Nelson, Colorado State University


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Monoxia sp. larvae in leafmine of Quinoa

Monoxia sp. larvae in leafmine of Quinoa Whitney S. Cranshaw, Colorado State University


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== Mormon cricket, adult == female Mormon cricket, adult female Frank B. Peairs, Colorado State University


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Mormon cricket, adult male

Mormon cricket, adult male Chuck M. McVean, Colorado State University


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Mormon cricket, eggs

Mormon cricket, eggs Chuck M. McVean, Colorado State University


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Mormon cricket killed by the protozoan parasite, Vairiomorpha sp.

Mormon cricket killed by the protozoan parasite, Vairiomorpha sp. Chuck M. McVean, Colorado State University


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Moth pupae

Moth pupae E. E. Nelson, Colorado State University


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Mourning cloak caterpillar

Mourning cloak caterpillar E. E. Nelson, Colorado State University


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Mustached mud bee

Mustached mud bee Anthophora abrupta. Photo by Scott Bauer.


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Mylabris sp.

Mylabris sp.


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Nabis on sunflower

Nabis on sunflower Frank B. Peairs, Colorado State University


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Nabis sp. Preying

Nabis sp. Preying


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Nantucket Pine Tip Moth

Nantucket Pine Tip Moth Adult - Newly Emerged (Shade/Forest)


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Nantucket Pine Tip Moth Injury

Nantucket Pine Tip Moth Injury (Shade/Forest)


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Nematode Angular Leaf Spot

Nematode Angular Leaf Spot H. F. Schwartz, Colorado State University


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Nematode parasite of grasshoppers adult on grass, Mermis nigrescens

Nematode parasite of grasshoppers adult on grass, Mermis nigrescens John L. Capinera, Colorado State University


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Nezara viridula Southern green stink bug

Nezara viridula Southern green stink bug (adult) Cosmopolitan


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Nezara viridula Southern green stink bug

Nezara viridula Southern green stink bug (nymph) Cosmopolitan


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Nezara viridula Southern green stink bug

Nezara viridula Southern green stink bug (drawing) Cosmopolitan


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NPV wilt virus, dead gypsy moth larvae, hanging from twig

NPV wilt virus, dead gypsy moth larvae, hanging from twig Whitney S. Cranshaw, Colorado State University


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NPV-killed gypsy moth larvae, hanging from pole

NPV-killed gypsy moth larvae, hanging from pole Whitney S. Cranshaw, Colorado State University


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Oak Sawfly

Oak Sawfly (Shade/Forest)


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Oat bird cherry aphids, Rhopalosiphum padi

Oat bird cherry aphids, Rhopalosiphum padi Frank B. Peairs, Colorado State University


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Oat-bird cherry aphids

Oat-bird cherry aphids Frank B. Peairs, Colorado State University


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Oberea larvae

Oberea larvae L. L. Berry, Colorado State University


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Ocellated Maple Leaf Gall

Ocellated Maple Leaf Gall (Shade/Forest)


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Old House Borer

Old House Borer (Household Insects)


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Onion thrips, 2nd instar nymph, Thrips tabaci

Onion thrips, 2nd instar nymph, Thrips tabaci Whitney S. Cranshaw, Colorado State University


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Onion thrips, first instar nymph

Onion thrips, first instar nymph Whitney S. Cranshaw, Colorado State University


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Onion thrips damage

Onion thrips damage E. E. Nelson, Colorado State University


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Onion thrips nymphs in new growth of onion

Onion thrips nymphs in new growth of onion Whitney S. Cranshaw, Colorado State University


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Onion thrips scarring of bean leaf

Onion thrips scarring of bean leaf Whitney S. Cranshaw, Colorado State University


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Orange - Striped Oakworm

Orange - Striped Oakworm (Shade/Forest)


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Oriental Cockroach

Oriental Cockroach (Household Insects)


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Oriental Fruit Moth - Peach Twig Damage

Oriental Fruit Moth - Peach Twig Damage (Fruit)


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Oriental fruit moth larvae in peach fruit

Oriental fruit moth larvae in peach fruit E. E. Nelson, Colorado State University


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Ostrinia nubilalis European corn borer

Ostrinia nubilalis European corn borer (larva) North America, Europe and Asia


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Ostrinia nubilalis European corn borer

Ostrinia nubilalis European corn borer (drawing) North America, Europe and Asia


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P-14 lady beetle

P-14 lady beetle A P-14 lady beetle devours a pea aphid. Photo by Scott Bauer.


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Painted lady butterfly, adult

Painted lady butterfly, adult Howard Evans, Colorado State University


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Painted lady butterfly adult on flower, Vanessa cardui

Painted lady butterfly adult on flower, Vanessa cardui Whitney S. Cranshaw, Colorado State University


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Painted lady larvae

Painted lady larvae Frank B. Peairs, Colorado State University


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Painted lady pupae

Painted lady pupae Frank B. Peairs, Colorado State University


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Pale striped flea beetle, adult

Pale striped flea beetle, adult F. B. Peairs, Colorado State University


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Pale Western Cutworm

- Pale Western Cutworm H. F. Schwartz, Colorado State University


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Pale western cutworm, larvae on wheat

Pale western cutworm, larvae on wheat Frank B. Peairs, Colorado State University


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Pale western cutworm adult, Agrotis orthogonia

Pale western cutworm adult, Agrotis orthogonia John L. Capinera, Colorado State University


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Pale western cutworm larvae

Pale western cutworm larvae John L. Capinera, Colorado State University


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Pale western cutworm larvae

Pale western cutworm larvae John L. Capinera, Colorado State University


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Pales Weevil - Pine

Pales Weevil - Pine (Shade/Forest)


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Palestriped flea beetle, adult on bean leaf

Palestriped flea beetle, adult on bean leaf Frank B. Peairs, Colorado State University


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Parasites on Russian wheat aphid

Parasites on Russian wheat aphid Frank B. Peairs, Colorado State University


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Parasitic wasp, Peristenus digoneutis

Parasitic wasp, Peristenus digoneutis A quarter-inch-long parasitic wasp, Peristenus digoneutis, prepares to lay an egg in a tarnished plant bug nymph. Photo by Scott Bauer.


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Pea aphids in alfalfa

Pea aphids in alfalfa Frank B. Peairs, Colorado State University


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Pea aphids on alfalfa, Acyrthosiphum pisum

Pea aphids on alfalfa, Acyrthosiphum pisum Frank B. Peairs, Colorado State University


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Peach crown borer, larvae

Peach crown borer, larvae E. E. Nelson, Colorado State University


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Peach crown borer, larvae

Peach crown borer, larvae E. E. Nelson, Colorado State University


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Peach Tree Borer - Female

Peach Tree Borer - Female (Fruit)


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Peach Tree Borer - Larva

Peach Tree Borer - Larva (Fruit)


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Peach twig borer, shoot flagging

Peach twig borer, shoot flagging E. E. Nelson, Colorado State University


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Peach twig borer damage

Peach twig borer damage E. E. Nelson, Colorado State University


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Peach twig borer damage

Peach twig borer damage E. E. Nelson, Colorado State University


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Peach twig borer damage

Peach twig borer damage E. E. Nelson, Colorado State University


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Peach twig borer damage

Peach twig borer damage E. E. Nelson, Colorado State University


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Pear + no rust spider mite damage

Pear + no rust spider mite damage E. E. Nelson, Colorado State University


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Pear psylla, adult

Pear psylla, adult E. E. Nelson, Colorado State University


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Pear psylla, adult

Pear psylla, adult E. E. Nelson, Colorado State University


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Pear psylla, eggs

Pear psylla, eggs E. E. Nelson, Colorado State University


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Pear psylla, nymphs

Pear psylla, nymphs E. E. Nelson, Colorado State University


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Pecan Spittlebug

Pecan Spittlebug (Pecan)


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Pecan Weevil Adult

Pecan Weevil Adult (Pecan)


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Pecan Weevil Larva

Pecan Weevil Larva (Pecan)


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Pentatomid predator with unknown prey Br

Pentatomid predator with unknown prey Brazil


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Peony Scale - Azalea

Peony Scale - Azalea (Ornamental Plants)


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Pheromone dispenser, mating disruptor

Pheromone dispenser, mating disruptor E. E. Nelson, Colorado State University


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Pheromone trap

Pheromone trap E. E. Nelson, Colorado State University


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Pheromone trap in pear orchard

Pheromone trap in pear orchard E. E. Nelson, Colorado State University


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Phrydiuchus tau, larvae

Phrydiuchus tau, larvae L. L. Berry, Colorado State University


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Pickleworm - Older Larvae

Pickleworm - Older Larvae (Vegetable)


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Pickleworm - Young Larvae

Pickleworm - Young Larvae (Vegetable)


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Piezodorus hybneri stink bug

Piezodorus hybneri stink bug (adult) Australia and Asia


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Piezodorus hybneri stink bug

Piezodorus hybneri stink bug (drawing) Australia and Asia


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Pine Spittlebug - Pine

Pine Spittlebug - Pine (Shade/Forest)


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Plains lubber grasshopper, Brachystola magna

Plains lubber grasshopper, Brachystola magna Whitney S. Cranshaw, Colorado State University


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Plant Hopper Showing Waxy Filament - Azalea

Plant Hopper Showing Waxy Filament - Azalea (Ornamental Plants)


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Plathpena scabra infected with Nomuraea

Plathpena scabra infected with Nomuraea rileyi USA


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Plathypena scabra green cloverworm

Plathypena scabra green cloverworm (adult) North America


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Plathypena scabra green cloverworm

Plathypena scabra green cloverworm (drawing) North America


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Plathypena scabra green cloverworm

Plathypena scabra green cloverworm (larva) North America


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Plathypena scabra green cloverworm

Plathypena scabra green cloverworm (drawing) North America


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Plum Curculio - Larva

Plum Curculio - Larva (Fruit)


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Plum Curculio - Plu,

Plum Curculio - Plu, (Fruit)


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Podalonia adult at nest entrance

Podalonia adult at nest entrance Howard E. Evans, Colorado State University


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Podalonia valida, adult with saltmarsh caterpillar prey

Podalonia valida, adult with saltmarsh caterpillar prey Howard E. Evans, Colorado State University


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Podalonia valida, egg on saltmarsh caterpillar prey

Podalonia valida, egg on saltmarsh caterpillar prey Howard E. Evans, Colorado State University


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Podalonia valida, larvae consuming saltmarsh caterpillar host

Podalonia valida, larvae consuming saltmarsh caterpillar host Howard E. Evans, Colorado State University


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Podalonia valida, larvae on saltmarsh caterpillar host

Podalonia valida, larvae on saltmarsh caterpillar host Howard E. Evans, Colorado State University


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Podalonia with cutworm prey

Podalonia with cutworm prey Howard E. Evans, Colorado State University


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Podisus maculiventris preying on caterpi

Podisus maculiventris preying on caterpillar USA


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Polistes wasp preying on caterpillar Jap

Polistes wasp preying on caterpillar Japan


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Polyphemus moth, larvae

Polyphemus moth, larvae E. E. Nelson, Colorado State University


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Popillia japonica Japanese beetle

Popillia japonica Japanese beetle (adult) North America and Asia


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Popillia japonica Japanese beetle

Popillia japonica Japanese beetle (drawing) North America and Asia


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Poplar Sphinx moth

Poplar Sphinx moth E. E. Nelson, Colorado State University


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Potato aphid, adult giving birth and young

Potato aphid, adult giving birth and young Whitney S. Cranshaw, Colorado State University


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Potato aphid, Macrosiphum euphorbiae, nymph with wing pads

Potato aphid, Macrosiphum euphorbiae, nymph with wing pads Whitney S. Cranshaw, Colorado State University


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potato beetle larvae

potato beetle larvae H. F. Schwartz, Colorado State University


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Potato psyllid, droppings on tomato leaf

Potato psyllid, droppings on tomato leaf Whitney S. Cranshaw, Colorado State University


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Potato psyllid, foliar symptoms on potato

Potato psyllid, foliar symptoms on potato Whitney S. Cranshaw, Colorado State University


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Potato psyllid, nymph & teneral adult

Potato psyllid, nymph & teneral adult Whitney S. Cranshaw, Colorado State University


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Potato psyllid, Paratrioza cockerelli adult

Potato psyllid, Paratrioza cockerelli adult Whitney S. Cranshaw, Colorado State University


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Potato psyllid, premature sprouting of potato tubers

Potato psyllid, premature sprouting of potato tubers Whitney S. Cranshaw, Colorado State University


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Potato psyllid, teneral adult

Potato psyllid, teneral adult Whitney S. Cranshaw, Colorado State University


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Potato psyllid eggs on leaf edge

Potato psyllid eggs on leaf edge Whitney S. Cranshaw, Colorado State University


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Praying Mantid

Praying Mantid (Beneficial Insects)


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Predaceous Sinkbug Attacking Green Stinkbug

Predaceous Sinkbug Attacking Green Stinkbug (Beneficial Insects)


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Predator midge larvae in aphid colony, Aphidoletes aphidomyza

Predator midge larvae in aphid colony, Aphidoletes aphidomyza Whitney S. Cranshaw, Colorado State University


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== Predatory beetle, == Thanasimus_formicarius Predatory beetle, Thanasimus formicarius This predatory beetle, Thanasimus formicarius, can eat about three pine shoot beetles daily for up to 3 months. The pine shoot beetle is a destructive pest of pine trees in about 150 U.S. counties. Photo by Scott Bauer.


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Predatory stinkbug feeding on fall armyworm, Podisus sp.

Predatory stinkbug feeding on fall armyworm, Podisus sp. Frank B. Peairs, Colorado State University


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Preying mantid

Preying mantid John L. Capinera, Colorado State University


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Prionyx adult with prey

Prionyx adult with prey Howard E. Evans, Colorado State University


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Prionyx eggs on grasshopper host

Prionyx eggs on grasshopper host Howard E. Evans, Colorado State University


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Prominent Caterpillars - Oak

Prominent Caterpillars - Oak (Shade/Forest)


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Propylea quatuordecimpunctata (14-spot) lady beetles

Propylea quatuordecimpunctata Three-sixteenths-inch-long Propylea quatuordecimpunctata (14-spot) lady beetles look for aphids on a fava bean leaf. Scientists think the beetles might be helpful in controlling Russian wheat aphids that now infest 17 Great Plains and Western states. Photo by Scott Bauer


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Pseudoplusia includens infected with Ent

Pseudoplusia includens infected with Entomophthora gammae (resting spores) USA


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Pseudoplusia includens soybean looper

Pseudoplusia includens soybean looper (adult) North, Central and South America


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Pseudoplusia includens soybean looper

Pseudoplusia includens soybean looper (drawing) North, Central and South America


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Pseudoplusia includens soybean looper

Pseudoplusia includens soybean looper (larva) North, Central and South America


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Pseudoplusia includens soybean looper

Pseudoplusia includens soybean looper (drawing) North, Central and South America


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Pseudoplusia includens, young larvae

Pseudoplusia includens, young larvae Frank B. Peairs, Colorado State University


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Psyllid adult on potato

Psyllid adult on potato E. E. Nelson, Colorado State University


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Psyllid injury on potato

Psyllid injury on potato E. E. Nelson, Colorado State University


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Psyllid injury to potato, aerial tubers from potato

Psyllid injury to potato, aerial tubers from potato Whitney S. Cranshaw, Colorado State University


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Psyllid nymph on potato

Psyllid nymph on potato E. E. Nelson, Colorado State University


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Psyllid nymph on potato

Psyllid nymph on potato E. E. Nelson, Colorado State University


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Pterolonche inspersa

Pterolonche inspersa L. L. Berry, Colorado State University


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Puncturevine Seed & Stem Weevils larvae, Microlarinus larinii & M. lyproformis

Puncturevine Seed & Stem Weevils larvae, Microlarinus larinii & M. lyproformis L. L. Berry, Colorado State University


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Pupae of lady beetle parasitoid

Pupae of lady beetle parasitoid Frank B. Peairs, Colorado State University


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Red seed weevil

Red seed weevil Frank B. Peairs, Colorado State University


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Redbacked cutworm adult, Euxoa ochrogaster

Redbacked cutworm adult, Euxoa ochrogaster John L. Capinera, Colorado State University


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Red-headed Pine Sawfly

Red-headed Pine Sawfly (Shade/Forest)


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Red-Humped Caterpillar

Red-Humped Caterpillar (Fruit)


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Red-Legged Grasshopper

Red-Legged Grasshopper (Alfalfa/Hay)


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Rice Weevil

Rice Weevil (Stored Products)


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Riptortus serripes

Riptortus serripes (adult) Australia


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Riptortus serripes

Riptortus serripes (drawing) Australia


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Rivellia quadrifasciata soybean nodule f

Rivellia quadrifasciata soybean nodule fly (adult) North America


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Rivellia quadrifasciata soybean nodule f

Rivellia quadrifasciata soybean nodule fly (adult) North America


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Robber flies, mating pair

Robber flies, mating pair Whitney S. Cranshaw, Colorado State University


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Robber fly, Microstylum galactodes

Robber fly, Microstylum galactodes Whitney S. Cranshaw, Colorado State University


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Robber fly adult, Laphria fernaldi

Robber fly adult, Laphria fernaldi Howard E. Evans, Colorado State University


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Robber fly adult with fly prey, Diogmites grossa

Robber fly adult with fly prey, Diogmites grossa Howard E. Evans, Colorado State University


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Robberfly with grasshopper prey

Robberfly with grasshopper prey John L. Capinera, Colorado State University


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Root Knot Nematode

Root Knot Nematode H. F. Schwartz, Colorado State University


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Root-boring Long-horned Beetle, Oberea erythrocephala

Root-boring Long-horned Beetle, Oberea erythrocephala L. L. Berry, Colorado State University


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Root-feeding Flea Beetle, Aphthona cyparissiae

Root-feeding Flea Beetle, Aphthona cyparissiae L. L. Berry, Colorado State University


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Root-feeding Flea Beetle, Aphthona czwalinae

Root-feeding Flea Beetle, Aphthona czwalinae L. L. Berry, Colorado State University


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Root-feeding Flea Beetle, Aphthona flava

Root-feeding Flea Beetle, Aphthona flava L. L. Berry, Colorado State University


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Root-feeding Flea Beetle, Aphthona nigriscutis

Root-feeding Flea Beetle, Aphthona nigriscutis L. L. Berry, Colorado State University


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Rootworm damage on 3 stub roots

Rootworm damage on 3 stub roots Colorado State University


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Rose Chafer

A Rose Chafer (Fruit)


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Rottenwood Caterpillars

Rottenwood Caterpillars (Shade/Forest)


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Round-headed borer, larvae

Round-headed borer, larvae E. E. Nelson, Colorado State University


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Russian Thistle Case-boring Moth & Stem Borer adult, Coleophora klimeschiella & C. parthenica

Russian Thistle Case-boring Moth & Stem Borer adult, Coleophora klimeschiella & C. parthenica L. L. Berry, Colorado State University


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Russian wheat aphid, adult

Russian wheat aphid, adult Frank B. Peairs, Colorado State University


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Russian wheat aphid, alate adult

Russian wheat aphid, alate adult Frank B. Peairs, Colorado State University


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Russian wheat aphid, being preyed upon

Russian wheat aphid, being preyed upon Frank B. Peairs, Colorado State University


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Russian wheat aphid alternate hosts

Russian wheat aphid alternate hosts Frank B. Peairs, Colorado State University


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Russian wheat aphid colony, Diuraphis noxia

Russian wheat aphid colony, Diuraphis noxia Frank B. Peairs, Colorado State University


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Russian wheat aphid damage

Russian wheat aphid damage Frank B. Peairs, Colorado State University


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Russian wheat aphid damage

Russian wheat aphid damage Frank B. Peairs, Colorado State University


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Russian wheat aphid damage to seed heads

Russian wheat aphid damage to seed heads Frank B. Peairs, Colorado State University


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Russian wheat aphid ESW

Russian wheat aphid ESW Frank B. Peairs, Colorado State University


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Russian wheat aphid graphic

Russian wheat aphid graphic M. S. McMillan, Colorado State University


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Russian wheat aphid T vs VT

Russian wheat aphid T vs VT Frank B. Peairs, Colorado State University


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Russian wheat aphid vs greenbug

Russian wheat aphid vs greenbug Frank B. Peairs, Colorado State University


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Russian wheat aphids

Russian wheat aphids Frank B. Peairs, Colorado State University


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Russian wheat aphids (colony), parasitized by Diaraetiella rapae

Russian wheat aphids (colony), parasitized by Diaraetiella rapae Frank B. Peairs, Colorado State University


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S. picipes adult (eats mites)

S. picipes adult (eats mites) Colorado State University


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Saddleback Caterpillar

  • Saddleback Caterpillar (Stinging and Biting Arthopods)


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Saltmarsh caterpillar, late instar larvae

Saltmarsh caterpillar, late instar larvae John L. Capinera, Colorado State University


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Saltmarsh caterpillar, late instar larvae

Saltmarsh caterpillar, late instar larvae John L. Capinera, Colorado State University


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Saltmarsh caterpillar adult female

Saltmarsh caterpillar adult female John L. Capinera, Colorado State University


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Saltmarsh caterpillar adult male

Saltmarsh caterpillar adult male John L. Capinera, Colorado State University


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Saltmarsh caterpillar eggs, Estigmene acrea

Saltmarsh caterpillar eggs, Estigmene acrea John L. Capinera, Colorado State University


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Saltmarsh caterpillar larvae on sugarbeet

Saltmarsh caterpillar larvae on sugarbeet Frank B. Peairs, Colorado State University


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San Jose scale on apple

San Jose scale on apple E. E. Nelson, Colorado State University


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San Jose scale on willow

San Jose scale on willow E. E. Nelson, Colorado State University


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Sap beetle

Sap beetle Carpophilus lugubris. Photo by Keith Weller


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Sap beetle damage on melons

Sap beetle damage on melons E. E. Nelson, Colorado State University


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Sap beetle damage on melons

Sap beetle damage on melons E. E. Nelson, Colorado State University


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Sap beetle damage on sweetcorn

Sap beetle damage on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle damage on sweetcorn

Sap beetle damage on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle larvae on sweetcorn

Sap beetle larvae on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle larvae on sweetcorn

Sap beetle larvae on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle larvae on sweetcorn

Sap beetle larvae on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle larvae on sweetcorn

Sap beetle larvae on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle larvae on sweetcorn

sweetcorn, sap beetles E. E. Nelson, Colorado State University


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Sap beetle nymphs on sweetcorn

Sap beetle nymphs on sweetcorn E. E. Nelson, Colorado State University


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Sap beetle trap

Sap beetle trap E. E. Nelson, Colorado State University


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Sap beetle trap

Sap beetle trap E. E. Nelson, Colorado State University


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Sap beetle trap

Sap beetle trap E. E. Nelson, Colorado State University


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Sap beetle trap

Sap beetle trap E. E. Nelson, Colorado State University


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Sap beetle trap + pheromone

Sap beetle trap + pheromone E. E. Nelson, Colorado State University


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Saw-Toothed Grain Beetle

Saw-Toothed Grain Beetle (Stored Grain)


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Scale - Euonymus

Scale - Euonymus (Ornamental Plants)


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Scarabaeidae larva white grub North Amer

Scarabaeidae larva white grub North America


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Scarabaeidae larva white grub North Amer

Scarabaeidae larva white grub (drawing) North America


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Scerotinia caused initial plant wilt

Scerotinia caused initial plant wilt H. F. Schwartz, Colorado State University


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Scorpion

Scorpion (Stinging and Biting Arthopods)


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Scorpion

Scorpion E. E. Nelson, Colorado State University


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SCR, NCR, and WCR adults

SCR, NCR, and WCR adults Colorado State University


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SCR adult

SCR adult Colorado State University


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SCR adult on sunflower leaf

SCR adult on sunflower leaf Colorado State University


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Screwworm larva

Screwworm larva Tusklike mandibles protruding from the screwworm larva's mouth rasp the flesh of living warm-blooded animals. A wound may contain hundreds of such larvae. Photo by John Kucharski.


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Seed weevil, larvae

Seed weevil, larvae Frank B. Peairs, Colorado State University


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Seed weevil larvae in sunflower seed

Seed weevil larvae in sunflower seed Frank B. Peairs, Colorado State University


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Seedcorn maggot larvae and feeding damage to bean cotyledons

Seedcorn maggot larvae and feeding damage to bean cotyledons Oregon State U., Colorado State University


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Seed-feeding Moth, Metzneria paucipunctella

Seed-feeding Moth, Metzneria paucipunctella L. L. Berry, Colorado State University


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Seed-head Gall Flies, Urophora affinis & U. quadrifasciata

Seed-head Gall Flies, Urophora affinis & U. quadrifasciata L. L. Berry, Colorado State University


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Seed-Head Gall Fly, Urophora stylata

Seed-Head Gall Fly, Urophora stylata L. L. Berry, Colorado State University


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Shoot-tip Gall Midge, Spurgia esulae

Shoot-tip Gall Midge, Spurgia esulae L. L. Berry, Colorado State University


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Shot-Hole Borer Damage

Shot-Hole Borer Damage (Fruit)


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Silverfish

Silverfish (Household Insects)


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Silverleaf whitefly

Silverleaf whitefly A one-sixteenth-inch long Silverleaf whitefly, Bemisia argentifolii. Photo by Scott Bauer.


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Silver-Spotted Skipper - Bean

Silver-Spotted Skipper - Bean (Vegetable)


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Smallstriped cutworm adult, Euxoa niveilinea

Smallstriped cutworm adult, Euxoa niveilinea John L. Capinera, Colorado State University


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Snail bagworms

Snail bagworms E. E. Nelson, Colorado State University


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Snake fly

Snake fly E. E. Nelson, Colorado State University


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== Snakefly, == Adult_female,_Rhaphidia_sp. Snakefly, Adult female Rhaphidia sp. Howard E. Evans, Colorado State University


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Snowy Tree Cricket

Snowy Tree Cricket (Tobacco)


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Soft scale

Soft scale E. E. Nelson, Colorado State University


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Soft scale

Soft scale E. E. Nelson, Colorado State University


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Soft scale lesions

Soft scale lesions E. E. Nelson, Colorado State University


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Sorghum midge adult, Contarinia sorghicola

Sorghum midge adult, Contarinia sorghicola Frank B. Peairs, Colorado State University


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Sorghum Webworm

Sorghum Webworm (Alfalfa/Hay)


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Southern corn rootworm/spotted cucumber beetle adult on corn silk

Southern corn rootworm/spotted cucumber beetle adult on corn silk John L. Capinera, Colorado State University


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Southern Corn Rootworm - Adult of 12-Spotted Cucumber Beetle

Southern Corn Rootworm - Adult of 12-Spotted Cucumber Beetle (Corn)


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Southern Corn Rootworm - Larva of 12-Spotted Cucumber Beetle

Southern Corn Rootworm - Larva of 12-Spotted Cucumber Beetle (Corn)


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Southern Cornstalk Borer

Southern Cornstalk Borer (Corn)


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Southern Green Stinkbug

Southern Green Stinkbug (Soybean)


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Southwestern corn borer adult

Southwestern corn borer adult John L. Capinera, Colorado State University


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Southwestern corn borer adult on corn leaf, Diatrea grandiosella

Southwestern corn borer adult on corn leaf, Diatrea grandiosella John L. Capinera, Colorado State University


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Southwestern corn borer larvae

Southwestern corn borer larvae John L. Capinera, Colorado State University


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Speckled cutworm adult, Polia subjuncta

Speckled cutworm adult, Polia subjuncta John L. Capinera, Colorado State University


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Sphenoptera jugoslavica adult

Sphenoptera jugoslavica adult L. L. Berry, Colorado State University


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Sphenoptera jugoslavica larvae in root

Sphenoptera jugoslavica larvae in root L. L. Berry, Colorado State University


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Sphinx moth, larvae

Sphinx moth, larvae E. E. Nelson, Colorado State University


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Sphinx moth caterpillar

Sphinx moth caterpillar E. E. Nelson, Colorado State University


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Spider, banded garden

Spider, banded garden E. E. Nelson, Colorado State University


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Spider, Banded garden with prey on web

Spider, Banded garden with prey on web Whitney S. Cranshaw, Colorado State University


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Spider, Black widow, immature

Spider, Black widow, immature E. E. Nelson, Colorado State University


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Spider, Burrowing wolf, Geolycosa sp.

Spider, Burrowing wolf, Geolycosa sp. Whitney S. Cranshaw, Colorado State University


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Spider, crab

Spider, crab E. E. Nelson, Colorado State University


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Spider, crab

Spider, crab Whitney S. Cranshaw, Colorado State University


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Spider, crab, on Quinoa leaf

Crab spider on Quinoa leaf Whitney S. Cranshaw, Colorado State University


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Spider, Daddylonglegs (Pholcidae)

Spider, Daddylonglegs (Pholcidae) Whitney S. Cranshaw, Colorado State University


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Spider, Funnelweb, at entrance of web, Agelenopsis sp.

Spider, Funnelweb, at entrance of web, Agelenopsis sp. Whitney S. Cranshaw, Colorado State University


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Spider, Giant wolf, Lycosa carolinensis

Spider, Giant wolf, Lycosa carolinensis Whitney S. Cranshaw, Colorado State University


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Spider, jumping

Spider, jumping E. E. Nelson, Colorado State University


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Spider, jumping

Spider, jumping E. E. Nelson, Colorado State University


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Spider, jumping

Spider, jumping E. E. Nelson, Colorado State University


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Spider, monkey-faced

Spider, monkey-faced E. E. Nelson, Colorado State University


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Spider, monkey-faced

Spider, monkey-faced Whitney S. Cranshaw, Colorado State University


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Spider, Nurseryweb, carrying egg sac

Spider, Nurseryweb, carrying egg sac Whitney S. Cranshaw, Colorado State University


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Spider, Solpugid sun

Spider, Solpugid sun E. E. Nelson, Colorado State University


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Spider, Wolf

Spider, Wolf E. E. Nelson, Colorado State University


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Spider, Wolf

Spider, Wolf E. E. Nelson, Colorado State University


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Spider, Wolf

Spider, Wolf E. E. Nelson, Colorado State University


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Spider, Wolf

Spider, Wolf E. E. Nelson, Colorado State University


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Spider, Wolf

Spider, Wolf E. E. Nelson, Colorado State University


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Spider - eats mites

Spider - eats mites Colorado State University


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Spider + web

Spider + web H. F.Schwartz, Colorado State University


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Spider Mite Damage to Holly

Spider Mite Damage to Holly (Ornamental Plants)


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Spider Mites Showing Web and Plant Injury

Spider Mites Showing Web and Plant Injury (Vegetable)


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Spilosoma virginica yellow woolybear

Spilosoma virginica yellow woolybear (larva) North America


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Spilosoma virginica yellow woolybear

Spilosoma virginica yellow woolybear (drawing) North America


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Spinach leafminer, larvae

Spinach leafminer, larvae E. E. Nelson, Colorado State University


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Spinach leafminer damage

Spinach leafminer damage E. E. Nelson, Colorado State University


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Spissistilus festinus three cornered alf

Spissistilus festinus three cornered alfalfa hopper (adult) North America


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Spissistilus festinus three cornered alf

Spissistilus festinus three cornered alfalfa hopper (drawing) North America


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Spittlebug - Nymph in Spittle

Spittlebug - Nymph in Spittle (Alfalfa/Hay)


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Spodoptera exigua

  • Spodoptera exigua


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Spodoptera frugiperda fall armyworm

Spodoptera frugiperda fall armyworm (larva) North America


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Spodoptera frugiperda fall armyworm

Spodoptera frugiperda fall armyworm (drawing) North America


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Spodoptera latifascia armyworm

Spodoptera latifascia armyworm (larva) Brazil


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Spodoptera latifascia armyworm

Spodoptera latifascia armyworm (drawing) Brazil


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Spotted asparagus beetle

Spotted asparagus beetle E. E. Nelson, Colorado State University


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Spotted cutworm adult, Amathes c-nigrum

Spotted cutworm adult, Amathes c-nigrum John L. Capinera, Colorado State University


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Spotted cutworm larvae

Spotted cutworm larvae Frank B. Peairs, Colorado State University


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Spruce gall aphid damage

Spruce gall aphid damage E. E. Nelson, Colorado State University


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Spurgia eggs

Spurgia eggs L. L. Berry, Colorado State University


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Spurgia gall

Spurgia gall L. L. Berry, Colorado State University


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Squash Beetle - Typical Damage

Squash Beetle - Typical Damage (Vegetable)


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Squash bug

Squash bug Photo by Scott Bauer


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Squash bug eggs

Squash bug eggs Whitney S. Cranshaw, Colorado State University


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Squash bug eggs

Squash_bug eggs E. E. Nelson, Colorado State University


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Squash bug mating pair, Anasa tristis

Squash bug mating pair, Anasa tristis Whitney S. Cranshaw, Colorado State University


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Squash bug nymph

Squash bug nymph Whitney S. Cranshaw, Colorado State University


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Squash bugs on pumpkin fruit

Squash bugs on pumpkin fruit Whitney S. Cranshaw, Colorado State University


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Squash vine borer larvae in stem, Melittia cucurbitae

Squash vine borer larvae in stem, Melittia cucurbitae Whitney S. Cranshaw, Colorado State University


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Stem & Bulb Nematode

Stem & Bulb Nematode H. F. Schwartz, Colorado State University


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Stem weevil larvae

Stem weevil larvae Frank B. Peairs, Colorado State University


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Stethorus picipes (eats mites)

Stethorus picipes (eats mites) Colorado State University


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Stethorus sp. adult and pupae

Stethorus sp. adult and pupae Frank B. Peairs, Colorado State University


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Stinkbug

Stinkbug E. E. Nelson, Colorado State University


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Stinkbug on apricot

Stinkbug on apricot E. E. Nelson, Colorado State University


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Striped b. beetle, E. vitatta

Striped b. beetle, E. vitatta John L. Capinera, Colorado State University


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Striped Blister Beetle

Striped Blister Beetle (Soybean)


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Striped Cucumber Beetle and Feeding Damage

Striped Cucumber Beetle and Feeding Damage (Vegetable)


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Striped cutworm adult, dark phase, Euxoa tessellata

Striped cutworm adult, dark phase, Euxoa tessellata John L. Capinera, Colorado State University


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Striped garden cutworm adult, Polia legitima

Striped garden cutworm adult, Polia legitima John L. Capinera, Colorado State University


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Subterranean Termite

Subterranean Termite (Household Insects)


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Suction trap

Suction trap Frank B. Peairs, Colorado State University


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Suction trap

Suction trap Frank B. Peairs, Colorado State University


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Sugarbeet root aphid colony on Quinoa root, Pemphigus populivenae

Sugarbeet root aphid colony on Quinoa root, Pemphigus populivenae Whitney S. Cranshaw, Colorado State University


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Sugarbeet root maggot adults, Tetanops myopaeformis

Sugarbeet root maggot adults, Tetanops myopaeformis Whitney S. Cranshaw, Colorado State University


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Sugarcane Beetle

Sugarcane Beetle (Corn)


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Sugarcane borer

Sugarcane borer Adult stage of the sugarcane borer, Diatraea saccharalis. Photo by William White.


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Sunflower beetle adult

Sunflower beetle adult Frank B. Peairs, Colorado State University


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Sunflower beetle adults and larvae, Zygogramma exclamationis

Sunflower beetle adults and larvae, Zygogramma exclamationis Frank B. Peairs, Colorado State University


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Sunflower beetle larvae

Sunflower beetle larvae Frank B. Peairs, Colorado State University


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== Sunflower beetles, mating == pair Sunflower beetles, mating pair Frank B. Peairs, Colorado State University


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Sunflower bud moth adult and damage

Sunflower bud moth adult and damage Frank B. Peairs, Colorado State University


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Sunflower bud moth larvae

Sunflower bud moth larvae Frank B. Peairs, Colorado State University


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Sunflower head clipper, Haplorhynchites aeneus

Sunflower head clipper, Haplorhynchites aeneus Frank B. Peairs, Colorado State University


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Sunflower head clipper adult

Sunflower head clipper adult Whitney S. Cranshaw, Colorado State University


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Sunflower maggot adult

Sunflower maggot adult Frank B. Peairs, Colorado State University


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Sunflower maggot adult

Sunflower maggot adult Frank B. Peairs, Colorado State University


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Sunflower maggot larvae in head

Sunflower maggot larvae in head Frank B. Peairs, Colorado State University


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Sunflower moth adult, Homoeosoma electellum

Sunflower moth adult, Homoeosoma electellum Frank B. Peairs, Colorado State University


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Sunflower moth damage

Sunflower moth damage Frank B. Peairs, Colorado State University


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Sunflower moth larvae

Sunflower moth larvae Frank B. Peairs, Colorado State University


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Sunflower moth larvae exposed on flower

Sunflower moth larvae exposed on flower Frank B. Peairs, Colorado State University


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Sunflower moth larvae feeding within seed

Sunflower moth larvae feeding within seed Frank B. Peairs, Colorado State University


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Sunflower stem borer larvae

Sunflower stem borer larvae Frank B. Peairs, Colorado State University


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Sunflower stem weevil larvae, Baris strenua

Sunflower stem weevil larvae, Baris strenua Frank B. Peairs, Colorado State University


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Swallowtail

Swallowtail E. E. Nelson, Colorado State University


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Swallowtail larvae

Swallowtail larvae E. E. Nelson, Colorado State University


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Swallowtail on lily

Swallowtail on lily E. E. Nelson, Colorado State University


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SWCB adult

SWCB adult Colorado State University


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SWCB damage to field

SWCB damage to field Colorado State University


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SWCB egg mass

SWCB egg mass Colorado State University


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SWCB larvae

SWCB larvae Colorado State University


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SWCB larvae in root crown

SWCB larvae in root crown Colorado State University


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Sweat bees

Sweat bees Small wild bees such as this one visiting a dandelion are often attracted by salty sweat on hot days. Photo by Scott Bauer.


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Sweet Potato Weevil

Sweet Potato Weevil (Vegetable)


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Sweetcorn, sap beetles

Sweetcorn, sap beetles E. E. Nelson, Colorado State University


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Syphid maggot preying on Spodoptera Braz

Syphid maggot preying on Spodoptera Brazil


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Syrphid adult

Syrphid adult Whitney S. Cranshaw, Colorado State University


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Syrphid adult

Syrphid adult Whitney S. Cranshaw, Colorado State University


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Syrphid adult

Syrphid adult Whitney S. Cranshaw, Colorado State University


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Syrphid fly egg on grass blade

Syrphid fly egg on grass blade Whitney S. Cranshaw, Colorado State University


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Syrphid Fly Larva

Syrphid Fly Larva (Beneficial Insects)


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Syrphid fly larvae feeding on aphids

Syrphid fly larvae feeding on aphids Frank B. Peairs, Colorado State University


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Syrphid larvae feeding on aphids on Columbine flower

Syrphid larvae feeding on aphids on Columbine flower Whitney S. Cranshaw, Colorado State University


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Syrphid larvae on Russian wheat aphid

Syrphid larvae on Russian wheat aphid Frank B. Peairs, Colorado State University


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Syrphid larvae with aphid prey carcasses

Syrphid larvae with aphid prey carcasses Whitney S. Cranshaw, Colorado State University


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Syrphid pupae

Syrphid pupae Frank B. Peairs, Colorado State University


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Tarantula hawk

Tarantula hawk E. E. Nelson, Colorado State University


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Tarantula hawk, Pepsis sp.

Tarantula hawk, Pepsis sp. Whitney S. Cranshaw, Colorado State University


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Tarnished plant bug, Lygus lineolaris

tarnished plant bug, Lygus lineolaris on clover. Photo by Scott Bauer.


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Tarnished plant bug, Lygus lineolaris

Tarnished plant bug, Lygus lineolaris is a serious pest of alfalfa being grown for seed. Photo by Scott Bauer.


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Tarnished plant bug

Tarnished plant bug is reared in the lab as a factory for parasites. Photo by Scott Bauer.


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Tea Scale on Camellia - Lower Surface

Tea Scale on Camellia - Lower Surface (White - males; Dark - females) (Ornamental Plants)


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Tea Scale on Camellia - Upper Surface

Tea Scale on Camellia - Upper Surface (Ornamental Plants)


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Tent caterpillars

Tent caterpillars E. E. Nelson, Colorado State University


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Tent caterpillars

Tent caterpillars E. E. Nelson, Colorado State University


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Tent caterpillars larvae

Tent caterpillars larvae E. E. Nelson, Colorado State University


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Tentiform leafminer on apple

Tentiform leafminer on apple E. E. Nelson, Colorado State University


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Tentiform leafminer on apple

Tentiform leafminer on apple E. E. Nelson, Colorado State University


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Termite damage in Malawi

Termite damage in Malawi H. F. Schwartz, Colorado State University


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Termite Damage to Book

Termite Damage to Book (Stored Products)


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Termites

Termites E. E. Nelson, Colorado State University


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Tetranychus urticae

  • Tetranychus urticae


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Three-Cornered Alfalfa Hopper

Three-Cornered Alfalfa Hopper (Soybean)


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Threelined potato beetle, mass of larvae

Threelined potato beetle, mass of larvae Whitney S. Cranshaw, Colorado State University


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Threelined potato beetle adult, Lema trilineata

Threelined potato beetle adult, Lema trilineata Whitney S. Cranshaw, Colorado State University


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Threelined potato beetle egg mass on tomatillo leaf

Threelined potato beetle egg mass on tomatillo leaf Whitney S. Cranshaw, Colorado State University


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Thrips

- Thrips H. F. Schwartz, Colorado State University


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Thrips damage to primary leaves of bean seedlings

Thrips damage to primary leaves of bean seedlings H. F. Schwartz, Colorado State University


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Thrips Injury to Seedling Cotton

Thrips Injury to Seedling Cotton (Cotton)


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Thrips larvae on bean leaf

Thrips larvae on bean leaf Frank B. Peairs, Colorado State University


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Thrips larvae on bean leaf

Thrips larvae on bean leaf H. F. Schwartz, Colorado State University


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Tiger Beetle

Tiger Beetle (Beneficial Insects)


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Two Lined Spittlebug - Adult

Two Lined Spittlebug - Adult (Alfalfa/Hay)


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Tobacco Budworm Damage to Bud - Tobacco

Tobacco Budworm Damage to Bud - Tobacco


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Tobacco Budworm Damage to Leaf

Tobacco Budworm Damage to Leaf (Tobacco)


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Tobacco Fleabeetle Adult

Tobacco Fleabeetle Adult (Tobacco)


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Tobacco Fleabeetle Damage and Adult

Tobacco Fleabeetle Damage and Adult (Tobacco)


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Tobacco Hornworm - Tomato

Tobacco Hornworm - Tomato (Vegetable)


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Tobacco Moth - Adult

Tobacco Moth - Adult (Stored Products)


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Tobacco Moth - Larvae

Tobacco Moth _ Larvae (Stored Products)


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Tobacco Wireworm

  • Tobacco Wireworm (Tobacco)


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Tomato Fruitworm

Tomato Fruitworm (Vegetable)


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Tortoise Beetle

Tortoise Beetle (Gold Bug) Two Species (Vegetable)


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Trialeurodes sp. Whiteflies Cosmopolitan

Trialeurodes sp. Whiteflies Cosmopolitan


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Trialeurodes sp. Whiteflies Cosmopolitan

Trialeurodes sp. Whiteflies (drawing) Cosmopolitan


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Trichoplusia

  • Trichoplusia


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Trissolcus sp. Parasitizing eggs on Neza

Trissolcus sp. Parasitizing eggs on Nezard viridula Thailand


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True armyworm

True armyworm Frank B. Peairs, Colorado State University


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True armyworm on silk

True armyworm on silk Colorado State University


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Tussock moth Larva

Tussock moth Larva (Shade/Forest)


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Twig Girdler

Twig Girdler (Pecan)


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== Two-spotted lady beetle vs Colorado potato beetle == egg masses Two-spotted lady beetle vs Colorado potato beetle egg masses Whitney S. Cranshaw, Colorado State University


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Two-Spotted Spider Mite Color Phases

Two-Spotted Spider Mite Color Phases (Cotton)


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Two-Spotted Spider Mite Damage

Two-Spotted Spider Mite Damage (Cotton)


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Two-spotted stink bug, mating pair showing dimorphism

Two-spotted stink bug, mating pair showing dimorphism Whitney S. Cranshaw, Colorado State University


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Two-spotted stink bug, Perillus bioculatus, adult

Two-spotted stink bug, Perillus bioculatus, adult John L. Capinera, Colorado State University


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Two-spotted stink bug adult feeding on potato beetle larvae

Two-spotted stink bug adult feeding on potato beetle larvae John L. Capinera, Colorado State University


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Typical Bollworm Damage

Typical Bollworm Damage (Cotton)


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Typical Silverfish Damage

Typical Silverfish Damage (Stored Products)


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Urophora carduii adult and gall

Urophora carduii adult and gall L. L. Berry, Colorado State University


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Urophora carduii gall

Urophora carduii gall L. L. Berry, Colorado State University


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Urophora gall

Urophora gall L. L. Berry, Colorado State University


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Urophora laying eggs

Urophora laying eggs L. L. Berry, Colorado State University


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Variegated Cutworm

- Variegated Cutworm H. F. Schwartz, Colorado State University


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Variegated cutworm, larvae

Variegated cutworm, larvae Frank B. Peairs, Colorado State University


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Variegated cutworm, larvae

Variegated cutworm, larvae John L. Capinera, Colorado State University


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Variegated cutworm larvae

Variegated cutworm larvae F. B. Peairs, Colorado State University


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Variegated cutworm larvae, Peridroma saucia

Variegated cutworm larvae, Peridroma saucia John L. Capinera, Colorado State University


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Varroa jacobsoni mite

Varroa jacobsoni mite Photo by Scott Bauer


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Vegatable Weevil Larva

Vegatable Weevil Larva (Tobacco)


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Vegetable leaf Miner Damage - Tomato

Vegetable leaf Miner Damage - Tomato (Vegetable)


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Vegetable Weevil Adult

Vegetable Weevil Adult (Tobacco)


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Velvet Ant

Velvet Ant (Stinging and Biting Arthopods)


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Velvet ant

Velvet ant E. E. Nelson, Colorado State University


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Velvet ant, male at flower

Velvet ant, male at flower Whitney S. Cranshaw, Colorado State University


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Velvetbean Caterpillar

Velvetbean Caterpillar (Soybean)


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Verticillium lecanii on Russian wheat aphid

Verticillium lecanii on Russian wheat aphid Susan Halbert, Colorado State University


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Verticillium lecanii on Russian wheat aphid colony

Verticillium lecanii on Russian wheat aphid colony Susan Halbert, Colorado State University


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Walnut husk fly in apple maggot trap

Walnut husk fly in apple maggot trap E. E. Nelson, Colorado State University


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Walnut husk fly maggot

Walnut husk fly maggot E. E. Nelson, Colorado State University


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Walnut husk fly maggots

Walnut husk fly maggots E. E. Nelson, Colorado State University


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Wasp

Wasp E. E. Nelson, Colorado State University


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Wax Scale

Wax Scale (Ornamental Plants)


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WBC adult moth

WBC adult moth Colorado State University


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WBC eggs hatching

WBC eggs hatching Colorado State University


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WBC larvae damage on 4 ears

WBC larvae damage on 4 ears Colorado State University


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WBC larvae on silks

WBC larvae on silks Colorado State University


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WBC larvae on tassel

WBC larvae on tassel Colorado State University


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WBC pre pupae and pupae in cell

WBC pre pupae and pupae in cell Colorado State University


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WCR, two roots damaged by WCR

WCR, two roots damaged by WCR Colorado State University


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WCR adult on leaf

WCR adult on leaf Colorado State University


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WCR larvae in soil

WCR larvae in soil Colorado State University


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WCR larvae on root

WCR larvae on root Colorado State University


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WCR silk damage on ear

WCR silk damage on ear Colorado State University


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WEB egg mass

WEB egg mass Colorado State University


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Webbing Clothes Moth

Webbing Clothes Moth (Stored Products)


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Webbing Clothes Moth Damage to Carpet

Webbing Clothes Moth Damage to Carpet (Stored Products)


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Webworm, alfalfa on leaf section

Webworm, alfalfa on leaf section Colorado State University


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Wellmarked cutworm adult, Spaelotis clandestina

Wellmarked cutworm adult, Spaelotis clandestina John L. Capinera, Colorado State University


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Western Bean Cutworm

- Western Bean Cutworm H. F. Schwartz, Colorado State University


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Western bean cutworm adult, Loxagrotis albicosta

Western bean cutworm adult, Loxagrotis albicosta John L. Capinera, Colorado State University


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Western bean cutworm damage - Chihuahua

Western bean cutworm damage - Chihuahua M. Geib, Colorado State University


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Western bean cutworm damage to bean pods

Western bean cutworm damage to bean pods G. L. Hein, Colorado State University


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Western bean cutworm damage to bean seed

Western bean cutworm damage to bean seed G. L. Hein, Colorado State University


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Western bean cutworm egg mass

Western bean cutworm egg mass Frank B. Peairs, Colorado State University


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Western bean cutworm eggs

Western bean cutworm eggs Frank B. Peairs, Colorado State University


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Western bean cutworm larvae

Western bean cutworm larvae F. B. Peairs, Colorado State University


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Western bean cutworm larvae

Western bean cutworm larvae Frank B. Peairs, Colorado State University


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Western bean cutworm larvae on corn tassel

Western bean cutworm larvae on corn tassel Frank B. Peairs, Colorado State University


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Western bean cutworm pheromone trap

Western bean cutworm pheromone trap G. L. Hein, Colorado State University


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Western black flea beetle and damage, Phyllotreta pusilla

Western black flea beetle and damage, Phyllotreta pusilla Whitney S. Cranshaw, Colorado State University


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Western Corn Rootworm

- Western Corn Rootworm H. F. Schwartz, Colorado State University


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Western corn rootworm adult, Diabrotica virgifera

Western corn rootworm adult, Diabrotica virgifera John L. Capinera, Colorado State University


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Western corn rootworm beetle

Western corn rootworm beetle F. B. Peairs, Colorado State University


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Western corn rootworm larvae in corn root

Western corn rootworm larvae in corn root John L. Capinera, Colorado State University


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Western flower thrips adult, Frankliniella occidentalis

Western flower thrips adult, Frankliniella occidentalis Frank B. Peairs, Colorado State University


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Western mantispid, Climaciella brunnea

Western mantispid, Climaciella brunnea Whitney S. Cranshaw, Colorado State University


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Western plant bug adult, Lygus elisus

Western plant bug adult, Lygus elisus Whitney S. Cranshaw, Colorado State University


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Western wheat aphid

Western wheat aphid Frank B. Peairs, Colorado State University


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Wheat stem sawfly

Wheat stem sawfly Frank B. Peairs, Colorado State University


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Wheathead armyworm adult, Faronta diffusa

Wheathead armyworm adult, Faronta diffusa John L. Capinera, Colorado State University


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Wheel bug, with anal gland exposed

Wheel bug, with anal gland exposed Whitney S. Cranshaw, Colorado State University


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Wheel bugs, Egg mass and newly hatched nymphs

Wheel bugs, Egg mass and newly hatched nymphs Whitney S. Cranshaw, Colorado State University


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White fly

White fly


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White Fringed Beetle

White Fringed Beetle (Ornamental Plants)


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White Grub

White Grub</b (Alfalfa/Hay)


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White Grub

- White Grub    H. F. Schwartz, Colorado State University   

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White grub larvae

White grub larvae Clemson Univ., Colorado State University


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White grub larvae on sunflower roots, Phyllophaga sp.

White grub larvae on sunflower roots, Phyllophaga sp. Frank B. Peairs, Colorado State University


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Whitefly - Adults

Whitefly - Adults (Ornamental Plants)


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Whitefly on bean leaf

Whitefly on bean leaf H. F. Schwartz, Colorado State University


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White-lined Sphinx moth

White-lined Sphinx moth E. E. Nelson, Colorado State University


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Winged aphid on bean leaf

Winged aphid on bean leaf H. F. Schwartz, Colorado State University


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Winged aphids

Winged aphids H. F. Schwartz, Colorado State University


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Wireworm

- Wireworm H. F. Schwartz, Colorado State University


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Wireworm

Wireworm (Corn)


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Wireworm

Wireworm Colorado State University


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Wireworm beetle, darkling adult

Wireworm beetle, darkling adult Colorado State University


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Wireworm larvae, Elateridae

Wireworm larvae, Elateridae Frank B. Peairs, Colorado State University


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Woolly Alder Aphid - Maple

Woolly Alder Aphid - Maple Ornamental Plants


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Woolly aphids

Woolly aphids E. E. Nelson, Colorado State University


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Woolly aphids

Woolly aphids E. E. Nelson, Colorado State University


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Woolly aphids

Woolly aphids E. E. Nelson, Colorado State University


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Yellow mealworm

Yellow mealworm Colorado State University


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Yellow Striped Armyworm

Yellow Striped Armyworm (Soybean)


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Yellow trap pan in potatoes, aphid monitoring

Yellow trap pan in potatoes, aphid monitoring E. E. Nelson, Colorado State University


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Yellow trap pan in potatoes, aphid monitoring

Yellow trap pan in potatoes, aphid monitoring E. E. Nelson, Colorado State University


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Yellowheaded cutworm adult, Apamea amputatrix

Yellowheaded cutworm adult, Apamea amputatrix John L. Capinera, Colorado State University


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Yellowstriped armyworm adult, Spodoptera ornithogalli

Yellowstriped armyworm adult, Spodoptera ornithogalli John L. Capinera, Colorado State University


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Zebra Caterpillar

Zebra Caterpillar (Ornamental Plants)


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Zelus sp., egg mass and newly hatched nymphs

Zelus sp., Egg mass and newly hatched nymphs Whitney S. Cranshaw, Colorado State University


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Zelus sp. on corn

Zelus sp. on corn Frank B. Peairs, Colorado State University


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Zonocerus variegatus

  • Zonocerus variegatus


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Zygrita diva stem borer

Zygrita diva stem borer (adult) Australia


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Zygrita diva stem borer

Zygrita diva stem borer (drawing) Australia


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Zygrita diva stem borer

Zygrita diva stem borer (larva)


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