Does impressions of (6)
'does impressions of' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for apes that I've seen before include "Parrots" , "Peas (anag)" , "Mimics like primates" , "Copies the primates?" , "Large primates" .)
(Other definitions for mimics that I've seen before include "Impersonates or parrots" , "Imitates satirically" , "Imitates for satirical effect" , "Imitators" , "Copies - apes" .)