Swap over an insect (4)

I believe the answer is:

wasp

'an insect' is the definition.
(I know that wasp is a type of hymenopter)

'swap over' is the wordplay.
'over' indicates anagramming the letters.
'swap' anagrammed gives 'WASP'.

(Other definitions for wasp that I've seen before include "Insect with a formidable sting" , "Being in the American elite" , "spiteful person?" , "Insect; thin (waist)" , "Middle class American" .)

I've seen this clue in The Mirror.

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