Sulphur Dun

The Sulphur Dun dry fly pattern has wings that are not quite dry, imitating a mayfly not quite ready to fly.

Sulphur Dun, 1 dozen (12)

1 dozen (12) - Sulphur Dun

Sulphur Dun Dry Fly - Trout Flies

Thorax Style Sulphur Dun on Vimeo

Sulphur Fly Patterns – Tagged Sulphur – West Branch Angler

Sulphur Biot Dun-Discount Trout Flies- — Big Y Fly Co

DW Sulphur Dun S16 Fishing Fly, Wet Flies

How to Tie a Thorax-Style Sulphur Dun

Sulphur Compara-Dun

Parachute Sulphur Dun - Ascent Fly Fishing

Fly Fishing the Eastern Sulphur Hatch in Pennsylvania - The Fly Crate

What's a Sulphur Dun? It's this guy.

Eastern Mayfly / Sulphur Flies For Fly Fishing - The Fly Crate

CDC Dun P.M.D., Flies

What is a DUN in Fly Fishing: Plus 5 Tips for Using Duns - Guide

Sulphur Dun 2 Pack