Eyes/head Small bead-chain coated in tinted epoxy or UV resin (amber/olive) (1 pair)
Legs Fine round rubber or Sili Legs, barred (4-6)
Body Krystal Flash chenille or dubbing, amber/olive (1)
Wing/collar Fine deer hair over the body (1 small clump)
How to tie it
Tie bead-chain eyes on top of the shank near the hook eye so the fly rides point-up, then coat them in tinted epoxy or UV resin to form the smooth colored 'bitter' head.
Behind the head tie in 2-3 rubber legs per side, splayed like crab legs.
Wrap a short body of Krystal Flash chenille or dubbing over the rear half of the shank.
Tie a small clump of fine deer hair over the body as a wing/collar, tips just past the bend. It flares slightly to suggest a scuttling crab's carapace and softens the landing.
Whip finish behind the epoxy head and cement.
Other versions
3 more in the app: Bitter's Crab, Bitters, Bitters Hot.