Here is the fly pattern sheet for the Andy Puyans A.P. Muskrat #2 nymph.
Materials
Hook:
Daiichi 1710 or Mustad 3906B (original), #10 – 18
Thread
Gray 6/0
Tail:
Dark moose hair
Wing case:
Dark moose hair
Body:
Dark muskrat
Rib:
.006″ gold wire
Head:
Gray 6/0
Legs:
Dark moose hair