Hairy arachnid (9)
I believe the answer is:
tarantula
'hairy arachnid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tarantula that I've seen before include "spider to appear" , "web developer" , "Creepy-crawly" , "web architect" , "Hairy arachnid" .)