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Ants are very fond of a sugary liquid that Plant lice secrete. They will milk the bugs of this liquid.

Ant and Plant Lice

Ants are very fond of a sugary liquid that Plant lice secrete. They will milk the bugs of this liquid.

The female woolly aphid larva (Schizoneura lanigera), a species of plant lice of the Eriostoma family.

Woolly Aphid Larva

The female woolly aphid larva (Schizoneura lanigera), a species of plant lice of the Eriostoma family.

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

Winged Aphides, or Plant Lice

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

Winged Aphides, or Plant Lice

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

Wingless Aphides, or Plant Lice

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

Wingless Aphides, or Plant Lice

"They subsist on the sap of the tree; and are sometimes provided with wings, and are sometimes without."

Head lice are parasites. That is any plant or animal which feeds upon another living plant or animal without destroying it.

Head Louse

Head lice are parasites. That is any plant or animal which feeds upon another living plant or animal…

Sucking louse of human body

Louse

Sucking louse of human body

"A genus of insects, the type of a very numerous family, which forms the order Parasita or Auoplura. The body is flattened, almost transparent; the segments both of the thorax and abdomen very distinct; the mouth is small and tubular, enclosing a sucker; there are no wings; the legs are short, and are terminated by a claw adapted for taking hold of hairs or feathers. The eyes are simple, one or two on each side of the head. All the species are small, and live parasitically, on human beings, terrestrial mammalia, and birds." — Chambers, 1881

Magnified Louse

"A genus of insects, the type of a very numerous family, which forms the order Parasita or Auoplura.…

"Aphis; a genus of small plant-sucking insects, of the family Aphididæ and order Homoptera."-Whitney, 1902

Apple Louse

"Aphis; a genus of small plant-sucking insects, of the family Aphididæ and order Homoptera."-Whitney,…

Woolly apple-louse, Schizoneura lanigera: showing a group of specimens on bark.

Apple Louse

Woolly apple-louse, Schizoneura lanigera: showing a group of specimens on bark.

Woolly apple-louse, Schizoneura lanigera: a crevice on a branch where they congregate.

Apple Louse

Woolly apple-louse, Schizoneura lanigera: a crevice on a branch where they congregate.

Woolly apple-louse, Schizoneura lanigera: a winged adult.

Apple Louse

Woolly apple-louse, Schizoneura lanigera: a winged adult.

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the insect is hatched out the next spring, and feeds upon the sap of the tree. The first broods are all females, which in a short time, without any intercourse with the males, give birth to living young by the process of gemmation. These also produce other young ones, which are all females as long as the summer lasts, and it is only in the autumn that males are produced, which, uniting with the females, become the parents of the eggs for the following spring brood, thus bearing living young all the summer, and laying eggs which can withstand the frosts of the winter in autumn for the following spring season, while the parent insects in winter are destroyed by the wet and cold weather and alternate freezing and thawing.

Apple Plant Louse

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the…

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the insect is hatched out the next spring, and feeds upon the sap of the tree. The first broods are all females, which in a short time, without any intercourse with the males, give birth to living young by the process of gemmation. These also produce other young ones, which are all females as long as the summer lasts, and it is only in the autumn that males are produced, which, uniting with the females, become the parents of the eggs for the following spring brood, thus bearing living young all the summer, and laying eggs which can withstand the frosts of the winter in autumn for the following spring season, while the parent insects in winter are destroyed by the wet and cold weather and alternate freezing and thawing.

Apple Plant Louse

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the…

Bee-louse of the Braula caeca species.

Bee Louse

Bee-louse of the Braula caeca species.

Bee-louse of the Braula caeca species; larva.

Bee Louse

Bee-louse of the Braula caeca species; larva.

A dog-louse.

Biting Louse

A dog-louse.

A sheep-louse.

Biting Louse

A sheep-louse.

A turkey-louse.

Biting Louse

A turkey-louse.

A tiny soft bodied, wingless insect that feeds on the mold in un-kept books.

Book Louse

A tiny soft bodied, wingless insect that feeds on the mold in un-kept books.

A psocus lineatus.

Book Louse

A psocus lineatus.

A small biting insect. Usually cured by an ointment

Crab Louse

A small biting insect. Usually cured by an ointment

Pediculus Pubis. The crab-louse is gray-black and is a much broader square form than the other two species of louse, that has been a great scourge to soliders in time of war. This insect has been named the crab-louse from its broad crab-like appearance. It is of grayish color; the head is small, and appears to be united with the broad body without any thorax; it inhabits the hairy part of the body, under the arms or shoulders, in the beard, etc., but appears to avoid the head. These insects pierce deeply into the skin of mankind, and produce an intolerable itching.

Crab Louse

Pediculus Pubis. The crab-louse is gray-black and is a much broader square form than the other two species…

"The <em>Galeruca rustica</em> is a common European species, called <em>Garden louse</em>.

Garden Louse

"The Galeruca rustica is a common European species, called Garden louse.

"Aphis; a genus of small plant-sucking insects, of the family Aphidid&aelig; and order Homoptera."-Whitney, 1902

Geranium Plant Louse

"Aphis; a genus of small plant-sucking insects, of the family Aphididæ and order Homoptera."-Whitney,…

Phylloxera Vastatrix, a grape-vine-root gall-louse, is by many entomologists supposed to be another form of the Pemphigus vitifoliae above mentioned, but that, instead of living above ground and forming hollow bag-like galls on the leaves, it lives under-ground on the roots, upon which it forms knotty swellings or galls.

Grape-Root Louse

Phylloxera Vastatrix, a grape-vine-root gall-louse, is by many entomologists supposed to be another…

Phylloxera Vastatrix, female pupa from above.

Grape-Root Louse

Phylloxera Vastatrix, female pupa from above.

Phylloxera Vastatrix, female pupa from below.

Grape-Root Louse

Phylloxera Vastatrix, female pupa from below.

Phylloxera Vastatrix, winged female from above.

Grape-Root Louse

Phylloxera Vastatrix, winged female from above.

Phylloxera Vastatrix, winged female from below.

Grape-Root Louse

Phylloxera Vastatrix, winged female from below.

A hog-louse of the Hermatopinus urius species.

Hog Louse

A hog-louse of the Hermatopinus urius species.

"Hop louse which lives on the plum tree in the late fall, winter, and early spring until the hop vines develope, male." &mdash; Davison, 1906

Hop Louse

"Hop louse which lives on the plum tree in the late fall, winter, and early spring until the hop vines…

Female hop-louse, showing eggs through skin.

Hop Louse

Female hop-louse, showing eggs through skin.

The male hop-louse.

Hop Louse

The male hop-louse.

Minute plant-feeding insects. They vary in size from 1-10 mm long.

Plant Louse

Minute plant-feeding insects. They vary in size from 1-10 mm long.

A root feeding plant lice.

Root Louse

A root feeding plant lice.

A root feeding plant lice.

Root Louse

A root feeding plant lice.

"A common dipterous insect, which feeds upon the blood of sheep and lambs."&mdash;Finley, 1917

Sheep Louse

"A common dipterous insect, which feeds upon the blood of sheep and lambs."—Finley, 1917

Ceraphron triticum, parasitic in wheat plant-louse

Wheat Louse

Ceraphron triticum, parasitic in wheat plant-louse

A winged female of the wheat plant louse species.

Wheat Plant Louse

A winged female of the wheat plant louse species.

"Wingless female, with a from which a parasite escaped." &mdash; Davison, 1906

Wheat Plant Louse

"Wingless female, with a from which a parasite escaped." — Davison, 1906

"Young louse." &mdash; Davison, 1906

Wheat Plant Louse

"Young louse." — Davison, 1906

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…