Orange Demon
Hook - Eagle Claw 1197B, Mustad 7957BX (2-8)
Thread - Orange
Tail - Hot orange hackle fibers
Body - Fluorescent yellow wool
Hackle - Hot orange as a wet fly collar
Wing - Black bear hair
Originated by Lloyd Silvius. Sometimes the body is tied with fluorescent green wool.
The Book of Fly Patterns: Over 1,000 Patterns for the Construction of Artificial Flies - Eric Leiser