Insects let loose when there are bees around (7)
I believe the answer is:
beetles
'insects' is the definition.
(I know this)
'when there are bees around' is the wordplay.
'when' becomes 'e' (I've seen this in other clues).
'there' becomes 'tl' (I am not sure about this - if you are sure you should believe this answer much more).
'around' means one lot of letters goes inside another.
'e'+'tl'='etl'
'etl' put within 'bees' is 'BEETLES'.
'let loose' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for beetles that I've seen before include "Bet eels could turn into insects" , "Four-winged insects" , "Lets bee turn to insects" .)