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CDC Mayfly Dun Fly Tying Materials

The CDC Mayfly Dun is a fantastic fly pattern for imitating Blue Winged Olive mayflies! This is one of our favorite flies to fish in the early spring during the BWO hatch here in the Black Hills. Tie in sizes 16-22.


  • Hook: Tiemco 100 or Daiichi 1100
  • Tails: Coq De Leon
  • Body: Nature's Spirit Natural Dubbing 
  • Wing: CDC 
  • Head: Nature's Spirit Natural Dubbing