Crossword Genius

Leaf-chewing creature (4)

Ross

I believe the answer is:

flea

'creature' is the definition.
(flea is a kind of creature)

'leaf-chewing' is the wordplay.
'chewing' indicates anagramming the letters.
'leaf' anagrammed gives 'FLEA'.

(Other definitions for flea that I've seen before include "Blood-sucking parasites" , "irritant type" , "Bug" , "Jumping bloodsucker" , "source of infestation" .)

I've seen this clue in The Mirror.
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