This is my version of the Batman Nymph. I used the recipe from Jaydub posted on another thread. A local caught around 20 or so rainbows on this fly a few days ago in the National Park.
Hook: any reasonable nymph hook (these are size 14 and 12)
Bead: gold bead
Ribbing: I used fine blue wire but any fine wire will work
Body: Purple Ice dub
Tail: brown goose biots
Wings: black goose biots
Hackle: black hen saddle or neck hackle