Point when bug penetrates fruit tree (9)
I believe the answer is:
tangerine
'fruit tree' is the definition.
(tangerine is a kind of fruit tree)
'point when bug penetrates' is the wordplay.
'point when' becomes 'tine' (I've seen this in other clues. I am not sure about the 'when' bit.).
'bug' becomes 'anger'.
'penetrates' means one lot of letters goes inside another.
'tine' placed around 'anger' is 'TANGERINE'.
Can you help me to learn more?
(Other definitions for tangerine that I've seen before include "Taste" , "Kind of orange" , "Small orange-like fruit (from North Africa?)" , "Moroccan" , "fruit product" .)