The San Jose scale, young larva just hatched.

San Jose Scale

The San Jose scale, young larva just hatched.

The San Jose scale, antenna.

San Jose Scale

The San Jose scale, antenna.

The San Jose scale, female showing the forming young through the body wall.

San Jose Scale

The San Jose scale, female showing the forming young through the body wall.

The San Jose scale, outline of anal plate of female.

San Jose Scale

The San Jose scale, outline of anal plate of female.

The scurfy scale, Chinaspis furfurus- a twig infested by female scales.

Scurfy Scale

The scurfy scale, Chinaspis furfurus- a twig infested by female scales.

The scurfy scale, Chinaspis furfurus- male scales.

Scurfy Scale

The scurfy scale, Chinaspis furfurus- male scales.

The scurfy scale, Chinaspis furfurus- female.

Scurfy Scale

The scurfy scale, Chinaspis furfurus- female.

The scurfy scale, Chinaspis furfurus- male scale

Scurfy Scale

The scurfy scale, Chinaspis furfurus- male scale

Schizoneura Langera in root form, galls caused by them on apple-roots.

Schizoneura Langera

Schizoneura Langera in root form, galls caused by them on apple-roots.

Schizoneura Langera in root form, wingless, wax-coated form.

Schizoneura Langera

Schizoneura Langera in root form, wingless, wax-coated form.

Schizoneura Langera in root form, winged form.

Schizoneura Langera

Schizoneura Langera in root form, winged form.

Pear-slug, larva of Eriocampa cerasi species.

Pear Slug

Pear-slug, larva of Eriocampa cerasi species.

A snail approaching bugs swimming at the waters edge.

Snail

A snail approaching bugs swimming at the waters edge.

Specius speciosus carrying a cicada to its home.

Specius

Specius speciosus carrying a cicada to its home.

An image of spores.

Spores

An image of spores.

The squash-bug, Anasa tristis species.

Squashbug

The squash-bug, Anasa tristis species.

"The female attains to six inches in length, and weighs as much as thirty thousand workers. It is an increase in the size of the abdomen alone. She produces sixty eggs a minute, more than eighty thousand a day."

Termes Lucifugus, Female

"The female attains to six inches in length, and weighs as much as thirty thousand workers. It is an…

"The male weighs as much as thirty workers, and attains the length of nearly four-fifths of an inch."

Termes Lucifugus, Male

"The male weighs as much as thirty workers, and attains the length of nearly four-fifths of an inch."

"The soldiers are twice as long, and weigh as much as fifteen workers. They may be distinguished by their horned head and sharp pincers."

Termes Lucifugus, Soldier

"The soldiers are twice as long, and weigh as much as fifteen workers. They may be distinguished by…

"The workers are one fifth of an inch long; the body soft and of extreme delicacy, but the sharp mandibles are capable of attacking the hardest bodies."

Termes Lucifugus, Worker

"The workers are one fifth of an inch long; the body soft and of extreme delicacy, but the sharp mandibles…

The Thrips Tritici bug.

Thrips Tritici

The Thrips Tritici bug.

An antenna of the Thrips Tritici.

Thrips Tritici

An antenna of the Thrips Tritici.

Tarsus of the Thrips Tritici.

Thrips Tritici

Tarsus of the Thrips Tritici.

Buffalo tree-hopper, Ceresa bubalus- tarsus.

Treehopper

Buffalo tree-hopper, Ceresa bubalus- tarsus.

Buffalo tree-hopper, Ceresa bubalus- antenna.

Treehopper

Buffalo tree-hopper, Ceresa bubalus- antenna.

Buffalo tree-hopper, Ceresa bubalus- wing.

Treehopper

Buffalo tree-hopper, Ceresa bubalus- wing.

Buffalo tree-hopper, Ceresa bubalus- mouth

Treehopper

Buffalo tree-hopper, Ceresa bubalus- mouth

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen

Treehopper

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, showing ovipositor.

Treehopper

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, showing ovipositor.

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, mouth

Treehopper

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, mouth

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, tip of abdomen

Treehopper

Buffalo tree-hopper, Ceresa bubalus- tip of abdomen, tip of abdomen

A "tumble-bug" of the Copris carolina species; larva.

Tumblebug

A "tumble-bug" of the Copris carolina species; larva.

A "tumble-bug" of the Copris carolina species; the cell in which it lived.

Tumblebug

A "tumble-bug" of the Copris carolina species; the cell in which it lived.

A "tumble-bug" of the Copris carolina species; pupa.

Tumblebug

A "tumble-bug" of the Copris carolina species; pupa.

A "tumble-bug" of the Copris carolina species; female beetle.

Tumblebug

A "tumble-bug" of the Copris carolina species; female beetle.

The twig-girdler of the Oncideres cingulatus species; a, beetle at work; b, egg-puncture; c, girdling done by beetle; c, egg.

Twig-girdler

The twig-girdler of the Oncideres cingulatus species; a, beetle at work; b, egg-puncture; c, girdling…

Diapheromera femorata- d, the male, and e the female.

Walking Sticks

Diapheromera femorata- d, the male, and e the female.

Diapheromera femorata- an egg.

Walking Sticks

Diapheromera femorata- an egg.

Diapheromera femorata- an egg.

Walking Sticks

Diapheromera femorata- an egg.

Diapheromera femorata- young just hatching.

Walking Sticks

Diapheromera femorata- young just hatching.

Pithy gall on blackberry, larva.

Gall Wasp

Pithy gall on blackberry, larva.

Pithy gall on blackberry, pupa.

Gall Wasp

Pithy gall on blackberry, pupa.

Pelecinus polyturator, male.

Pelecinid Wasp

Pelecinus polyturator, male.

Pelecinus polyturator, female.

Pelecinid Wasp

Pelecinus polyturator, female.

Fraternal potter-wasp, Eumenes fraterna, wasp.

Potter Wasp

Fraternal potter-wasp, Eumenes fraterna, wasp.

Fraternal potter-wasp, Eumenes fraterna, wasp's cell.

Potter Wasp

Fraternal potter-wasp, Eumenes fraterna, wasp's cell.

Fraternal potter-wasp, Eumenes fraterna, wasp's cell broken up to show the caterpillars stored in it.

Potter Wasp

Fraternal potter-wasp, Eumenes fraterna, wasp's cell broken up to show the caterpillars stored in it.

Pepsis formosus, tarantula-hawk.

Tarantula Wasp

Pepsis formosus, tarantula-hawk.

Trichogramma pretiosa, a parasite in insect eggs.

Trichogramma Wasp

Trichogramma pretiosa, a parasite in insect eggs.

A water-boatman, Notenecta species.

Water Boatman

A water-boatman, Notenecta species.

A water-strider, Rheumatobates rileyi, female.

Water Strider

A water-strider, Rheumatobates rileyi, female.

A water-strider, Rheumatobates rileyi, female; ovipositor.

Water Strider

A water-strider, Rheumatobates rileyi, female; ovipositor.

A water-strider, Rheumatobates rileyi, female; hind tarsus.

Water Strider

A water-strider, Rheumatobates rileyi, female; hind tarsus.

A water-tiger, Dytiscus marginalis species; larva devouring an Agrion larva.

Water Tiger

A water-tiger, Dytiscus marginalis species; larva devouring an Agrion larva.

A water-tiger, Dytiscus marginalis species; pupa.

Water Tiger

A water-tiger, Dytiscus marginalis species; pupa.

A water-tiger, Dytiscus marginalis species; male beetle, the elytra of the female at side.

Water Tiger

A water-tiger, Dytiscus marginalis species; male beetle, the elytra of the female at side.

A water-tiger, Dytiscus marginalis species; anterior tarsus of the male, with sucking disks.

Water Tiger

A water-tiger, Dytiscus marginalis species; anterior tarsus of the male, with sucking disks.

A water-tiger, Dytiscus marginalis species; tarsus of the female.

Water Tiger

A water-tiger, Dytiscus marginalis species; tarsus of the female.

Water bugs, or Hemiptera, are true bugs.

Waterbug

Water bugs, or Hemiptera, are true bugs.

A Belostama Americana insect.

Giant Waterbug

A Belostama Americana insect.