Crossword Genius

Pesky bug (4)

Ross

I believe the answer is:

gnat

'pesky bug' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for gnat that I've seen before include "Tiny thing" , "Small (swarming) fly" , "Small biting flying insect" , "Tang (anag.)" , "Small biting fly" .)

I've seen this clue in the King Feature Syndicate and the USA Today.
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