Killer
Hook - Single salmon
Thread - Black
Tail - Red hackle fibers (gap width past bend)
Ribbing - Medium flat silver tinsel
Body - Bright red wool
Hackle - Bright red as a wet fly collar
Wing - Natural black squirrel tail or black bear hair
The Book of Fly Patterns: Over 1,000 Patterns for the Construction of Artificial Flies - Eric Leiser
