Here is the fly pattern sheet for the Green Drake Hairwing Dun.
Materials
Hook:
Standard dry fly hook, #10 – 14
Thread:
Black 6/0
Tail:
Moose
Body:
Dark olive dubbing
Hackle:
Grizzly hackle dyed olive-yellow
Rib:
Bright yellow or brown floss
Wing:
Black or dark gray calf or elk hair
For a brief history of the fly, check out the Throw Back Thursday Flies post – Green Drake Hairwing Dun.