Learn how to tie the Sulphur Dun dry fly pattern, including step-by-step instructions, a video tutorial, pictures, and much more. Improve your fly-tying skills here.

There are many versions of this fly out there. I found 4 in Flies for Trout by Stewart and Allen. This particular pattern was designed by George Harvey, Penn State fishing instructor and author of Techniques of Trout Fishing and Fly Tying. I think this fly dates to the 1930s. Sulphur Mayflies are small so sizes 14 -18 are appropriate.

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