While this fly isn't a tough tie by any means, it fools many a picky mayfly eating trout. Brown is a good color, and olive and black are also good bets. The smaller, 20-24 sizes have been most productive.

Materials:

Hook: Tiemco 101 or Daiichi 1110 Size 16-24
Thread: Tiemco 16/0
Tail: Hareline Mayfly Tails (Micro Fibbets)
Abdomen/Thorax: Beaver Dubbing
Wing: Web from saddle hackle or partridge