The most common and most likely answer to this crossword clue is the 8 letter word PLANTAIN
I've seen this crossword clue in The Guardian
P
L
A
N
T
A
I
N
More clues leading to the result PLANTAIN
- Maybe banana worker in flat territory
- Factory involved in a type of banana
- Worker splitting open banana
- Fruit left worker in trouble
- Insect burrowing into unvariegated banana
- Colonist possibly into homely tropical food
- Insect tucking into prairie fruit
- Insect tucked into unattractive banana-like fruit
- Spy a fashionable fruit
- It’s obvious insect can penetrate banana
Buddy explains!

The straight part
We know that "banana" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case banana = plantain.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PLANTAIN mean?
PLANTAIN noun- A plant of the genus Plantago, with a rosette of sessile leaves about 10 cm long with a narrow part instead of a petiole, and with a spike inflorescence with the flower spacing varying widely among the species. See also psyllium.
- A plant in the genus Musa, the genus that includes banana, but with lower sugar content than banana.
- The fruit of the plant, usually cooked before eating and used like potatoes.