Insect making natural circles (4)

I believe the answer is:

gnat

'insect' is the definition.
(I know that gnat is a type of dipteran)

'making natural circles' is the wordplay.
'circles' indicates the answer is hidden within the clue.
'GNAT' can be found hidden inside 'making natural'.

(Other definitions for gnat that I've seen before include "Any of various small biting flies" , "Small bloodsucker" , "Tiny biter" , "Insect like small mosquito" , "Tang (anag.)" .)

I've seen this clue in The Telegraph.

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