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.

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.