Flyfishing the Sierras

• Hook: TMC 200R #8-14
• Thread: Black 6/0
• Underbody: Olive dubbing
• Abdomen: Peacock Herl
• Tail: Two Brown Goose Biots, split
• Rib: Gold Wire or Oval tinsel
• Thorax: Gray Hare's Ear Dubbing
• Wingcase: Turkey or Pheasant Tail Fibers
• Legs: Partridge or Grouse feather
• Head: Medium Gold Bead

Notes: The Twenty Incher originated in Colorado by a local tier on the Roaring Fork River. It is a pattern for stonefly nymphs but also is a good attractor nymph. It has been around for at least 20 years, probably earlier when other peacock herl body flies such as the Zug Bug and the Prince Nymph became popular. It remains an excellent stonefly pattern within the Sierras. Smaller sizes can be tied to imitate mayfly nymphs. When tying the larger sizes, try using a dubbed underbody with a tapered shape. This will help to get the proper size and shape when using the herl overbody. The 200R hook has a tight bend to it. You may need to go to a smaller bead size to fit the bead around the bend. On this fly, I was using a 1/8" Gold Bead on a size 8 TMC 200R.