The Damsel ( or Demoiselle ) or in latin Calopteryx splendens is perfect for use on a hot summer day. Both trout and bass will rise and actually jump through the water surface to catch this great snack. The pattern is usually tied on a hook #12 or #10. The tail is made by using blue dyed deer hair, the wings are made by tying a bundle of white antron. For the hackle you can make a parachute hackle with white cock feathers.