Dark Stone Bi-Visible (Pat Trotter)
Dry Fly, Stonefly Adult
Tied By Andrew Marshall
Hook: Mustad 9672 (3x long), Nos. 2-6
Thread: Orange
Tail: clump of brown bucktail, forked
Body: wrap with orange thread, then tightly palmer as many multi-colour variant hackles as the shank will hold; wrap them one after the other.
Head: Orange
Notes:
Source: Hafele, Rick and Hughes, David., (1981). The Complete Book of Western Hatches. Frank Amato Publications Inc, Portland, OR.