Crossword Genius

Garden pest a Greek character finally identifies (5)

Ross

I believe the answer is:

aphis

'garden pest' is the definition.
(I've seen this before)

'a greek character finally identifies' is the wordplay.
'greek character' becomes 'phi' (letter from the Greek alphabet).
'finally' suggests the final letters.
The final letter of 'identifies' is 's'.
'a'+'phi'+'s'='APHIS'

(Other definitions for aphis that I've seen before include "Plant louse" , "Small insect" , "Greenfly" , "sucker?" , "Sap-sucking garden pest" .)

I've seen this clue in The Times.
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