Insect found in open banana (8)
I believe the answer is:
plantain
'banana' is the definition.
(I know that plantain is a type of banana)
'insect found in open' is the wordplay.
'insect' becomes 'ant' (ant is a kind of insect).
'found in' means one lot of letters goes inside another.
'open' becomes 'plain' (I can't explain this - if you can you should believe this answer much more).
'ant' placed within 'plain' is 'PLANTAIN'.
Can you help me to learn more?
(Other definitions for plantain that I've seen before include "Sort of banana" , "Large banana - weed" , "Tropical food" , "Tropical plant like a banana" , "Banana-like fruit" .)