The classic pattern to cover a wide variety of mayflies. Tied in BWO, this pattern can be tied in a variety of sizes from 12-22. This one is tied on a size 20 Firehole #419 hook.
When skies are overcast and it's hard to see, this wing can be easier to see than a CDC wing. Finding the right deer hair is important as it has to be able to float the fly.
Hook: TMC 100, Daiichi 1100 Size 14-20. Firehole Size 20 #419 used here.
Thread: Uni Olive Dun, 8/0
Tail: 2 Split Mircofibbetts
Wing: Nature's Spirit Compara Dun Deer Hair
Dubbing: Olive Brown Superfine Dubbing