Craig Mathews of Blue Ribbon Flies demonstrates how to tie an Improved Sparkle Dun, an Epeorus mayfly imitation, which is a popular pattern on the Madison River and many famed rivers in the greater Yellowstone National Park area including Yellowstone River, Slough Creek, Gallatin River, Lamar River, and Soda Butte Creek.
Hook: TMC 2488, size 14-16
Thread: Uni-Thread 8/0, Primrose
Wing: Comparadun Deer Hair
Backing Wing / Trailing Shuck: Zelon
Thorax: Superfine Dubbing