A great "all purpose fly" and a good winter nymph. Tied with a black phase gray squirrel tail, if you can get some. If not use red fox squirrel instead using the darkest material on the tail. My buddy Ben gave me a black squirrel tail from one he had shot and I tied up a bunch of these for him. With or without a bead or wire head it's a great searching pattern on those dark and dreary winter days. Fish it as a wet fly dead drifted and then swung downstream. Black and Tan APF (all purpose fly) Nymph tied and photographed by Doug Korn This fly is one of a series of variations of my Korn’s SCHWARPF fly. (Swept Custom Hackle Winged All Revised Purpose Fly) materials list: Hook: vintage Mustad #16 wet Thread: Serafil tan 200/2 Wire Head and rib: gold 28 ga. craft wire 2 layers 4 and 3 turns Tail, Shellback and Wing: black squirrel tail tied in by the tips, divided 1/3 for tail, 2/3's for shellback and wing Body and Collar: tan ha