Body Chenille (chartreuse, black or fluo colours) (1 length)
Legs Rubber/silicone legs (4 pairs (8 legs))
Hackle (optional) Soft webby hen or saddle (1 feather)
How to tie it
Lay a thread base to the bend, then add 10-12 wraps of lead-free wire around the mid-shank for a slow, hovering sink; lock it with thread and return to the bend.
Tie in the chenille at the bend and wrap the thread forward to one eye-length behind the eye.
Wrap the chenille forward to form a fat, buggy body and tie off.
Tie in rubber legs in pairs (front and rear) so the fly has plenty of splayed, wiggling legs. The movement is the trigger.
Optionally wind a soft hackle collar, then build a small head, whip finish and cement.