It's a stone nymph pattern, often called a K nymph. I picked the fly/pattern up from someone who lives on the Big Horn in MT. He called it a Krauss nymph (probably named for a local). There is also a Kauffman's stonefly nymph that looks similar. The preferred colors are black, brown, golden and olive.
Last edited by kytroutman; 04-14-2009 at 07:42 AM..