Grape or vine louse are wingless. These insects are very small.

Grape or Vine Louse

Grape or vine louse are wingless. These insects are very small.

Fish louse, adult

Louse

Fish louse, adult

Fish louse, larva

Louse

Fish louse, larva

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,…

A dog-louse.

Biting Louse

A dog-louse.

A sheep-louse.

Biting Louse

A sheep-louse.

A turkey-louse.

Biting Louse

A turkey-louse.

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,…

The grape or vine louse belongs to the Aphides, or Green Flies. The insect lives on the European vine. Galls are formed by the louse on each side of roots and leaves.

Grape or Vine Louse

The grape or vine louse belongs to the Aphides, or Green Flies. The insect lives on the European vine.…

"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…

"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

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

A common mite.

Parasitic Mite

A common mite.

"The Whale-Louse, <em>Cyamus seti</em>, is found on whales along our coasts." &mdash; Goodrich, 1859

Whale-louse

"The Whale-Louse, Cyamus seti, is found on whales along our coasts." — Goodrich, 1859

"The family Oniscidae, including the well-known Wood-Louse, <em>Oniscus murarius</em>, and many similar animals, are characterized by the adaptation of their members to a terrestrial existence." &mdash; Goodrich, 1859

Wood-louse

"The family Oniscidae, including the well-known Wood-Louse, Oniscus murarius, and many similar…