Woolly louse

Definition of Woolly louse

(Zool.) a plant louse (Schizoneura lanigera syn Erisoma lanigera) which is often very injurious to the apple tree. It is covered with a dense coat of white filaments somewhat resembling fine wool or cotton. In exists in two forms, one of which infests the roots, the other the branches. See Illust. under Blight.

See also: Woolly

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woolly bears
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-Woolly louse-
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