Parasitic insect whose eggs are known as nits (5)

I believe the answer is:

louse

(Other definitions for louse that I've seen before include "Wingless bloodsucking insect" , "Parasite; nasty person" , "Common parasite on animals" , "Human parasite" , "Bloodsucking parasitic insect" .)

I've seen this clue in The Times.

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