biting louse

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bit·ing louse

, chewing lousefeather louse
ectoparasites (order Mallophaga) chiefly found on birds, where they feed on feathers, hair, epidermal debris, and (less commonly) on blood; they possess nipperlike, heavily sclerotized mandibles and a characteristic broad head; many species are host specific.
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biting louse

n.
Any of numerous lice that have chewing mouthparts and feed on the feathers, fur, and skin of birds and mammals. Also called chewing louse.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.