Reporter’s spotted a flycatcher (6)
I believe the answer is:
spider
'flycatcher' is the definition.
(spiders catch flies)
I cannot understand how the rest of the clue works.
(Other definitions for spider that I've seen before include "One has eight legs" , "A crawler" , "Insect-eater" , "Bathtub intruder - snooker rest" , "Arthropod; snooker rest" .)