Adalia bipuncia, larva.

Adalia Bipuncia

Adalia bipuncia, larva.

Adalia bipuncia, pupa.

Adalia Bipuncia

Adalia bipuncia, pupa.

Adalia bipuncia, adult.

Adalia Bipuncia

Adalia bipuncia, adult.

Larva of the Agrion.

Agrion

Larva of the Agrion.

An agrion insect.

Agrion

An agrion insect.

The adult form of Phymata Erosa.

Jagged Ambush Bug

The adult form of Phymata Erosa.

The adult form of Phymata Erosa.

Jagged Ambush Bug

The adult form of Phymata Erosa.

Front leg of Phymata Erosa.

Jagged Ambush Bug

Front leg of Phymata Erosa.

Beak of Phymata Erosa.

Jagged Ambush Bug

Beak of Phymata Erosa.

Burrow of Andrena, showing cells in order of completion; the first at <em>a</em>, the last at <em>f</em>, in which an egg has just been laid.

Andrena

Burrow of Andrena, showing cells in order of completion; the first at a, the last at f,…

Anisopteryx pometaria species; male.

Anisopteryx

Anisopteryx pometaria species; male.

Anisopteryx pometaria species; female.

Anisopteryx

Anisopteryx pometaria species; female.

Anisopteryx pometaria species; structural detail.

Anisopteryx

Anisopteryx pometaria species; structural detail.

Anisopteryx pometaria species; structural detail.

Anisopteryx

Anisopteryx pometaria species; structural detail.

Anisopteryx pometaria species; structural detail.

Anisopteryx

Anisopteryx pometaria species; structural detail.

A small insect; a pismire.

Ant

A small insect; a pismire.

"Ant-lions diffuse an odor of roses. Their flight, which is weak, distinguishes them from the dragon-fly."

Ant Lion (Myrmeleo Formicarius)

"Ant-lions diffuse an odor of roses. Their flight, which is weak, distinguishes them from the dragon-fly."

Cremastogaster lineolata, large worker.

Crematogaster Ant

Cremastogaster lineolata, large worker.

Cremastogaster lineolata, large worker.

Crematogaster Ant

Cremastogaster lineolata, large worker.

Cremastogaster lineolata, head of large worker.

Crematogaster Ant

Cremastogaster lineolata, head of large worker.

Cremastogaster lineolata, female.

Crematogaster Ant

Cremastogaster lineolata, female.

Cremastogaster lineolata, female's wing.

Crematogaster Ant

Cremastogaster lineolata, female's wing.

Cremastogaster lineolata, small worker.

Crematogaster Ant

Cremastogaster lineolata, small worker.

Honey-ant, Myrmecocystus melliger, filled with honey.

Honey Ant

Honey-ant, Myrmecocystus melliger, filled with honey.

Honey-ant, Myrmecocystus melliger, filled with honey.

Honey Ant

Honey-ant, Myrmecocystus melliger, filled with honey.

The Queen Ant of slave-making ants.

Queen Ant

The Queen Ant of slave-making ants.

A working ant.

Slave Ant

A working ant.

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna

Antenna in Lepidoptera; clubbed antenna of butterfly.

Antenna in Lepidoptera; prismatic and fusiform.

Antenna

Antenna in Lepidoptera; prismatic and fusiform.

Antenna in Lepidoptera; ciliated.

Antenna

Antenna in Lepidoptera; ciliated.

Antenna in Lepidoptera; bristle-tufted.

Antenna

Antenna in Lepidoptera; bristle-tufted.

Antenna in flies; tip of plumose antenna.

Antenna

Antenna in flies; tip of plumose antenna.

Antenna in flies; joints verticilate.

Antenna

Antenna in flies; joints verticilate.

Antenna in flies; aristate, the arista bare.

Antenna

Antenna in flies; aristate, the arista bare.

Antenna in flies; arista plumose at base.

Antenna

Antenna in flies; arista plumose at base.

Antenna in flies; arista plumose to tip.

Antenna

Antenna in flies; arista plumose to tip.

"Everything indicates that these organs play a very important part in the life of insects."

Antenna of a Species of Asida

"Everything indicates that these organs play a very important part in the life of insects."

"Everything indicates that these organs play a very important part in the life of insects."

Antenna of Zygia Oblonga

"Everything indicates that these organs play a very important part in the life of insects."

A Myrmeleo adult fly, of the family Myrmeleonidae.

Antlion

A Myrmeleo adult fly, of the family Myrmeleonidae.

"A very beautiful species of the ant-lion is to be found in the climate which characterizes the south of France; its larva can move forward, and does not dig itself a funnel."

Antlion

"A very beautiful species of the ant-lion is to be found in the climate which characterizes the south…

Apanteles species. Little mass of cocoonson leaf, replacing an infested larva.

Apanteles

Apanteles species. Little mass of cocoonson leaf, replacing an infested larva.

Apanteles species. Single cocoon from which adult has issued.

Apanteles

Apanteles species. Single cocoon from which adult has issued.

Apanteles species, adult.

Apanteles

Apanteles species, adult.

Aphelinus mytilaspidis, parasite on scale insects.

Aphelinus

Aphelinus mytilaspidis, parasite on scale insects.

Numerous species of aphids, or plant lice, are known, and they are among the greatest pests of the gardener and farmer.

Aphid

Numerous species of aphids, or plant lice, are known, and they are among the greatest pests of the gardener…

Eriosoma Lanigera, or the Wooly Apple-Tree Blight. These insects appropriate for their generic name two Greek words, signifying wool and body, the insect being partially enveloped in a cottony or wool-like secretion, furnished from its own body. The eggs are deposited in crotches or cracks of the branches or bark, often at or near the surface of the ground, or on new shoots springing from the parent tree.

Wooly Aphid

Eriosoma Lanigera, or the Wooly Apple-Tree Blight. These insects appropriate for their generic name…

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together on the twigs, and have the appearance of many small spots of snow-like wool or down moving up and down by jerks, the hinder parts of the insect being covered with this downy secretion.

Wooly Aphid

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together…

Eriosoma Tesselata was found on birch in Maryland, in clusters near the ends of twigs, in the autumn. It is of a black color, with white spots on the fore part of its body, and is covered with a snow white down or wool on its hinder part.

Wooly Aphid

Eriosoma Tesselata was found on birch in Maryland, in clusters near the ends of twigs, in the autumn.…

Grain or oat-plant louse, does much injury to grain, and especially to oats, but is also found on wheat, rye, and other cereals.

Aphis Avence

Grain or oat-plant louse, does much injury to grain, and especially to oats, but is also found on wheat,…

Also known as the Cotton-plant louse, is a great nuisance to the planters, especially when the plants are very small, as then they are more liable to succumb to the attacks of these insects, as by sucking out the sap they distort the stems, and in fact frequently kill the plants before they have attained sufficient maturity and strength to withstand their repeated attacks.

Aphis Gossypii

Also known as the Cotton-plant louse, is a great nuisance to the planters, especially when the plants…

A large aphis is found in clusters on the under side of limbs of hickory, oak, and basswood and walnut, July and August, puncturing the bark and sucking the sap.

Hickory Aphis

A large aphis is found in clusters on the under side of limbs of hickory, oak, and basswood and walnut,…

Moth of army-worm, Leucania unipuncta species.

Armyworm

Moth of army-worm, Leucania unipuncta species.

Moth of army-worm, Leucania unipuncta species; tip of abdomen of female.

Armyworm

Moth of army-worm, Leucania unipuncta species; tip of abdomen of female.

Moth of army-worm, Leucania unipuncta species; structural detail.

Armyworm

Moth of army-worm, Leucania unipuncta species; structural detail.

Moth of army-worm, Leucania unipuncta species; structural detail.

Armyworm

Moth of army-worm, Leucania unipuncta species; structural detail.

Moth of army-worm, Leucania unipuncta species; structural detail.

Armyworm

Moth of army-worm, Leucania unipuncta species; structural detail.

Army-worm, Leucania unipuncta species.

Armyworm

Army-worm, Leucania unipuncta species.

The wheat-head army-worm; eating out a head of grain.

Armyworm

The wheat-head army-worm; eating out a head of grain.