Insect part (6)
I believe the answer is:
thorax
'insect part' is the definition.
(I know that thorax is part of bug)
This is the entire clue.
(Other definitions for thorax that I've seen before include "Insect's upper body" , "Part of the human torso between neck and diaphragm" , "Upper part of body" , "Green light" , "Trunk between neck and abdomen" .)