Hook - Mustad 9672, size 4 or 6
Thread - Black
Tail - Golden pheasant tippets
Hackle - Medium brown saddle tied palmer
Ribbing - Yellow waxed tying thread or fine gold wire (wire pictured)
Body - Flat gold tinsel
Wing - Gray squirrel tail
Collar - White tip hair of gray squirrel on wing only (optional)
Head - Peacock or ostritch herl
I tie a much smaller version of this fly using woodchuck guard hair for both the wing and tail, and peacock for the body and head. It is a killing pattern for me in the early season when Caddis are prevalent.