For lack of a known name, I call this a Glistening Caddis. This pattern, I believe, was first tied by Kelly Galloup.
The fly is pretty much an improved X-Caddis, but uses a few Pearl UV ice dub fibers. These fibers really make this version much more effective.
Not the best tie or photo, but please give it a try and let me know if it works as well for you. Size 16.
http://i1101.photobucket.com/albums/...psgbzvcxfu.jpg
