The pupa of Dytiscus marginalis, the Great Diving Beetle.

Great Diving Beetle

The pupa of Dytiscus marginalis, the Great Diving Beetle.

The Imperial Moth (Eacles imperialis) is an insect in the Saturniidae family of large and colorful moths.

Imperial Moth

The Imperial Moth (Eacles imperialis) is an insect in the Saturniidae family of large and colorful moths.

Spongophora brunneipennis is a species of earwig, and insect distinguished by forceps on its abdomen.

Earwig

Spongophora brunneipennis is a species of earwig, and insect distinguished by forceps on its abdomen.

The Ivory-Marked Beetle (Eburia quadrigeminata) is an insect in the Cerambycidae family of longhorn beetles.

Ivory-Marked Beetle

The Ivory-Marked Beetle (Eburia quadrigeminata) is an insect in the Cerambycidae family of longhorn…

The soldier of Eciton drepanophorum, a species of army ant in the Formicidae family of ants.

Army Ant

The soldier of Eciton drepanophorum, a species of army ant in the Formicidae family of ants.

Ectrichodia cruciata is a species of assassin bugs in the Hemiptera order of true bugs.

Assassin Bug

Ectrichodia cruciata is a species of assassin bugs in the Hemiptera order of true bugs.

Edema albifrons is a species of moth of the Bombycidae family.

Edema

Edema albifrons is a species of moth of the Bombycidae family.

Edessa bifida is a species of stink bug in the Pentatomidae family of stink and shield bugs.

Stink Bug

Edessa bifida is a species of stink bug in the Pentatomidae family of stink and shield bugs.

Ega sallei is a species of insect in the Carabidae family of ground beetles.

Ground Beetle

Ega sallei is a species of insect in the Carabidae family of ground beetles.

Elachertus cacoeciae is a species of Chalcid wasp of the Hymenoptera order.

Chalcid Wasp

Elachertus cacoeciae is a species of Chalcid wasp of the Hymenoptera order.

"Elaphidion parallelum ... a, larva; b, twig split open, showing inclosed pupa; k, severed end of twig; c, beetle; i, basal joints of an antenna, showing the characteristic spines at the tip of the third and fourth joints; j, tip of elytron; d, e, f, g, h, head, maxilla, labium, mandible, and antenna of larva." -Whitney, 1911

Long-Horned Beetle

"Elaphidion parallelum ... a, larva; b, twig split open, showing inclosed pupa; k, severed end of twig;…

Elaphrus riparius is a species of Ground Beetle in the Carabidae family.

Ground Beetle

Elaphrus riparius is a species of Ground Beetle in the Carabidae family.

Elis quadrinotata is a species of wasp in the Scoliidae family.

Scoliid Wasp

Elis quadrinotata is a species of wasp in the Scoliidae family.

Elmis glaber is a species of beetle in the Elmidae family.

Elmis Beetle

Elmis glaber is a species of beetle in the Elmidae family.

Embolimus americanus is a species of wasp belonging to the Proctotrupoidea superfamily of various wasps.

Embolimus Wasp

Embolimus americanus is a species of wasp belonging to the Proctotrupoidea superfamily of various wasps.

"Strawberry False-worm (Emphytus maculatus). 1, 2 pupa, ventral and lateral views (line shows natural size); 3, fly, enlarged (wings on one side detached); 4, larva; 5, fly with wings closed; 6, larva curled up; 7, coccoon; 8, antenna; 9, egg. (4, 5, 6, and 7 natural size; 8 and 9 enlarged.)" -Whitney, 1911

Strawberry Sawfly

"Strawberry False-worm (Emphytus maculatus). 1, 2 pupa, ventral and lateral views (line shows natural…

Encyrtus cecidomyiae is a species of wasp in the Encyrtidae family of parasitic wasps.

Parasitic Wasp

Encyrtus cecidomyiae is a species of wasp in the Encyrtidae family of parasitic wasps.

The Handsome Fungus Beetle (Endomychus biguttatus) is an insect in the Cucujoidea superfamily of beetles.

Handsome Fungus Beetle

The Handsome Fungus Beetle (Endomychus biguttatus) is an insect in the Cucujoidea superfamily of beetles.

Chrysocharis imbrasus is an insect in the Chalcidoidea family of Chalcid wasps.

Chalcid Wasp

Chrysocharis imbrasus is an insect in the Chalcidoidea family of Chalcid wasps.

Epicauta pardalis is a species of blister beetle in the Meloidae family.

Blister Beetle

Epicauta pardalis is a species of blister beetle in the Meloidae family.

Epicauta maculata is a species of blister beetle in the Meloidae family.

Blister Beetle

Epicauta maculata is a species of blister beetle in the Meloidae family.

Epilachna borealis is a species of squash beetle in the Coccinellidae family of ladybugs.

Ladybug

Epilachna borealis is a species of squash beetle in the Coccinellidae family of ladybugs.

Efferia aestuans (or Erax bastardi) is an insect in the Asilidae family of robber flies.

Robber Fly

Efferia aestuans (or Erax bastardi) is an insect in the Asilidae family of robber flies.

The pupa of Efferia aestuans (or Erax bastardi), an insect in the Asilidae family of robber flies.

Robber Fly Pupa

The pupa of Efferia aestuans (or Erax bastardi), an insect in the Asilidae family of robber flies.

The larva of Efferia aestuans (or Erax bastardi), an insect in the Asilidae family of robber flies.

Robber Fly Larva

The larva of Efferia aestuans (or Erax bastardi), an insect in the Asilidae family of robber flies.

The larva of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Larva

The larva of Erotylus boisduvali, a fungus beetle.

The larva of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Larva

The larva of Erotylus boisduvali, a fungus beetle.

The ventral and dorsal view of the pupa of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Pupa

The ventral and dorsal view of the pupa of Erotylus boisduvali, a fungus beetle.

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint of tarsus, from above; i, antenna." -Whitney, 1911

Fungus Beetle

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint…

The imago stage of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae family of hoppers.

Threebanded Grape Leafhopper Imago

The imago stage of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae…

The imago stage of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae family of hoppers.

Threebanded Grape Leafhopper Imago

The imago stage of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae…

The pupa of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae family of hoppers.

Threebanded Grape Leafhopper Pupa

The pupa of the Threebanded Grape Leafhopper (Erythroneura tricincta) is an insect in the Cicadellidae…

The Milkweed Tiger Moth (Euchaetes egle) is an insect in the Arctiidae family of tiger moths.

Milkweed Tiger Moth

The Milkweed Tiger Moth (Euchaetes egle) is an insect in the Arctiidae family of tiger moths.

The larva Milkweed Tiger Moth (Euchaetes egle) is also known as the Milkweed Tussock caterpillar.

Milkweed Tiger Moth Larva

The larva Milkweed Tiger Moth (Euchaetes egle) is also known as the Milkweed Tussock caterpillar.

Eucharis americana is an insect in the Chalcididae family of parasitic wasps.

Chalcid Wasp

Eucharis americana is an insect in the Chalcididae family of parasitic wasps.

"Female Moth of Gooseberry-spanworm (Eufitchia ribearia)." -Whitney, 1911

Gooseberry Spanworm

"Female Moth of Gooseberry-spanworm (Eufitchia ribearia)." -Whitney, 1911

Eumenes fraterna is a species of potter wasps in the Vespidae family of wasps.

Potter Wasp

Eumenes fraterna is a species of potter wasps in the Vespidae family of wasps.

Eupelmus floridanus is a species of Chalcid wasp, a parasitic insect in the Eupelmidae family.

Chalcid Wasp

Eupelmus floridanus is a species of Chalcid wasp, a parasitic insect in the Eupelmidae family.

The Garden Tiger Moth (Arctia caja) is a species of tiger moths that are also known by the synonym Euprepia caja.

Garden Tiger Moth

The Garden Tiger Moth (Arctia caja) is a species of tiger moths that are also known by the synonym Euprepia…

Eurygaster alternatus is an insect species in the Pentatomidae family of stink bugs and shield bugs.

Stink Bug

Eurygaster alternatus is an insect species in the Pentatomidae family of stink bugs and shield bugs.

The female chalcid wasp (Eurytoma prunicola) is a parasitoid in the family Chalcididae.

Female Chalcid Wasp

The female chalcid wasp (Eurytoma prunicola) is a parasitoid in the family Chalcididae.

The male chalcid wasp (Eurytoma prunicola) is a parasitoid in the family Chalcididae.

Male Chalcid Wasp

The male chalcid wasp (Eurytoma prunicola) is a parasitoid in the family Chalcididae.

The dorsal view of the Ensign Wasp (Evania laevigata), an insect in the Evaniidae family.

Dorsal View of Ensign Wasp

The dorsal view of the Ensign Wasp (Evania laevigata), an insect in the Evaniidae family.

The dorsal view of the Ground Beetle (Evarthrus orbatus), an insect in the Carabidae family of carabid beetles.

Dorsal View of Ground Beetle

The dorsal view of the Ground Beetle (Evarthrus orbatus), an insect in the Carabidae family of carabid…

The Yellow-Tailed Tachina Fly (Belvosia unifasciata) is an insect in the Tachinidae family and is also known as the synonym Exorista flavicauda.

Yellow-Tailed Tachina Fly

The Yellow-Tailed Tachina Fly (Belvosia unifasciata) is an insect in the Tachinidae family and is also…

The side view of the compound eye of the housefly.

Compound Eye of Housefly

The side view of the compound eye of the housefly.

The male Fidonia faxoni, an species from the Geometridae family of geometer moths.

Male Geometer Moth

The male Fidonia faxoni, an species from the Geometridae family of geometer moths.

The female Fidonia faxoni, an species from the Geometridae family of geometer moths.

Female Geometer Moth

The female Fidonia faxoni, an species from the Geometridae family of geometer moths.

The Grape Rootworm Beetle (Fidia viticida) is an insect in the Chrysomelidae family of leaf beetles.

Grape Rootworm Beetle

The Grape Rootworm Beetle (Fidia viticida) is an insect in the Chrysomelidae family of leaf beetles.

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg, under side of segment, and head of larva." -Whitney, 1911

Common Eastern Firefly

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg,…

The human flea (Pulex irritans) is a parasite in the the Siphonaptera order of fleas.

Human Flea

The human flea (Pulex irritans) is a parasite in the the Siphonaptera order of fleas.

The Grapevine Flea Beetle (Altica chalybea). "a, leaf infested with larvae; b, larva; c, cocoon; d, beetle." -Whitney, 1911

Grapevine Flea Beetle

The Grapevine Flea Beetle (Altica chalybea). "a, leaf infested with larvae; b, larva; c, cocoon; d,…

The Blackberry Psyllid (Trioza tripunctata) is an insect that feeds on specific plants.

Blackberry Psyllid

The Blackberry Psyllid (Trioza tripunctata) is an insect that feeds on specific plants.

"Sarracenia Flesh-fly (Sarcophaga sarraceniae). a, larva; b, pupa; c, fly; d, head and prothoracic joints of larva, showing curved hooks, lower lip, and prothoracic spiracles; e, end of body of larva, showing stigmata, prolegs, and vent; h, tarsal claws of fly with protecting pads; i, antenna of fly." -Whitney, 1911

Sarracenia Flesh Fly

"Sarracenia Flesh-fly (Sarcophaga sarraceniae). a, larva; b, pupa; c, fly; d, head and prothoracic joints…

The flour or mealworm beetle (Tenebrio molitor) is an insect in the Tenebrionidae family darkling beetles.

Mealworm Beetle

The flour or mealworm beetle (Tenebrio molitor) is an insect in the Tenebrionidae family darkling beetles.

The Insidious Flower Bug is an insect in the Heteroptera suborder of true bugs.

Insidious Flower Bug

The Insidious Flower Bug is an insect in the Heteroptera suborder of true bugs.

Now known as Mayetiola destructor: "Hessian Fly (Cecidomyia destructor). a, larva; b, pupa; c, infested stalk of wheat." -Whitney, 1911

Stages of the Hessian Fly

Now known as Mayetiola destructor: "Hessian Fly (Cecidomyia destructor). a, larva; b, pupa; c, infested…

The adult Eight-Spotted Forester (Alypia octomaculata), a moth belonging to the Noctuidae family of Owlet moths.

Eight-Spotted Forester

The adult Eight-Spotted Forester (Alypia octomaculata), a moth belonging to the Noctuidae family of…

The larva Eight-Spotted Forester (Alypia octomaculata), a caterpillar belonging to the Noctuidae family of Owlet moths.

Eight-Spotted Forester Larva

The larva Eight-Spotted Forester (Alypia octomaculata), a caterpillar belonging to the Noctuidae family…

Aphrophora quadrangularis is a species of Froghopper, an insect in the order Hemiptera.

Dorsal View of Froghopper

Aphrophora quadrangularis is a species of Froghopper, an insect in the order Hemiptera.