Insect pest in emerging nations (4)

I believe the answer is:

gnat

'insect pest' is the definition.
(type of insect)

'in emerging nations' is the wordplay.
'in' says the answer is hidden in the clue.
'GNAT' is hidden in the letters of 'emerging nations'.

(Other definitions for gnat that I've seen before include "Small biter" , "Small, swarming insect" , "little irritation" , "Sucker (if female)" , "Woodland area" .)

I've seen this clue in The Guardian.

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