No crop is damaged by this creature (8)
I believe the answer is:
scorpion
'this creature' is the definition.
(scorpion is a kind of creature)
'no crop is damaged' is the wordplay.
'damaged' indicates anagramming the letters.
'no'+'crop'+'is'='nocropis'
'nocropis' is an anagram of 'SCORPION'.
'by' is the link.
(Other definitions for scorpion that I've seen before include "Kind of arachnid with pincers and stinging tail" , "Stinging arachnid - constellation" , "Stinging creature" , "Poisonous creature" , "Kind of spider with pincers and stinging tail" .)