CIA cad ordered bug (6)
I believe the answer is:
cicada
'bug' is the definition.
(cicada is a type of insect)
'cia cad ordered' is the wordplay.
'ordered' indicates an anagram.
'cia'+'cad'='ciacad'
'ciacad' with letters rearranged gives 'CICADA'.
(Other definitions for cicada that I've seen before include "crawler" , "Loud chirping insect" , "The insect produces a high-pitched sound" , "Noisy tropical insect" , "one that loves the heat" .)