Olive P.H. Mayfly

Hook: Kamasan B100, size 12. (You can substitute with another brand of nonplated, lightweight scud or emerger hook.)
Thread: UTC 70, gray brown.
Abdomen: Olive Micro Chenille.
Tails: Cock pheasant center tail fibers dyed olive.
Thorax cover: Olive Swiss straw or Raffene.
Wings: Mottled light-dun Web Wing. (Web Wing is a product offered by a company called D’s Flyes. No-Fray Winging Material, distributed by Hareline Dubbin, is a good substitute.)
Legs: A gray partridge hackle and a light olive cock hackle.