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The LP Isonymph

The Isonychia Bicolor, known affectionately as the Slate Drake to most, is a very exciting hatch and provides a quality fishing experience. The Iso nymph can reach sizes of nearly an inch under optimal conditions and is an excellent swimmer. In fact many people mistake Slate Drake nymphs for small minnows zipping through the water. The special hook used and the placement of the weight wire creates a fly that rides level in the water and has realistic swimming motion when stripped. This nymph can be fished dead drift but is even more effective when swung or fished like a small streamer, especially when hatch activity is occuring.

Hook: Orvis 1512 Nymph

Sizes: #10-12

Thread: Size 6/0

Tails: Brown/Rust Turkey Biots

Abdomen: Brown Ostrich Herl

Back: Brown/Rust Turkey Biot

Wingcase: Spinner Wing Film

Rib: 4-5X Tippet

Thorax: Spectrablend Caddis Peacock Dubbing

Hackle: Speckled Hen Back

Weight: .015 Non-toxic Wire

Special: Epoxy over wingcase

 

Wrapping the Non-toxic Wire at the middle of the shank on the specially curved Orvis 1512 Hook will make the fly ride level in the water. Remember, the Slate Drake, or Isonychia, nymph is an excellent swimmer and will hold a more level body orientation at rest and as it moves around.

 

Tie in some Light Brown Antron for the tails. The tails of an Iso nymph are wide and webby and aid in propulsion. Since they're constantly moving and fluttering the natural looking sparkle of Antron is a good match.

 

Tie in a Mahogany or Rusty Brown Turkey Biot and a piece of 4X or 5X tippet for ribbing.

 

Tie in 4-5 Brown Ostrich Herls. Twist the herls into a rope, wrap, tie off and clip.

 

pull the biot over the top of the abdomen, tie off and clip. Rib it down with the tippet.

 

Tie in a piece of Spinner Wing Film wide enough to come down around the sides of the thorax. Build a nice big bulky thorax with some dubbing, my favorite for most nymphs is Orvis Spectrablend Caddis Dubbing in Peacock.

 

Tie in a soft hackle, wet your fingertips and stroke the fibers backwards. Wrap the hackle and clip.

 

Pull the Spinner Wing Film over the thorax, tie off, and clip. Add a drop of two part epoxy over the wingcase, this is best done when you have a dozen or so to epoxy at the same time.

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