Insect initially biting female in humble surroundings (7)
I believe the answer is:
blowfly
'insect' is the definition.
(blowfly is a kind of insect)
'initially biting female in humble surroundings' is the wordplay.
'initially' suggests taking the first letters.
'female' becomes 'f' (common abbreviation).
'in humble' becomes 'lowly' (synonyms. I am not sure about the 'in' bit.).
'surroundings' is an insertion indicator.
The initial letter of 'biting' is 'b'.
'f' inserted within 'lowly' is 'lowfly'.
'b'+'lowfly'='BLOWFLY'
(Other definitions for blowfly that I've seen before include "Bluebottle" , "insect" .)