Sulphur Dun

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

Mayfly Species Ephemerella invaria (Sulphur Dun) hatch & pictures

Captive Dun Sulphur – West Branch Angler

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

DW Sulphur Dun S16 Fishing Fly, Wet Flies

The stage of the new hatched adult mayfly is called Dun. Depending on surronding circumstances such as temperature, wind and weather, the time it

J:son Mayfly Dun 3 Sulphur #18

Steelhead Alley Outfitters- Lake Erie Fly Fishing Guide Service

The Sulfur - Sulphur Dun Dry Fly

How to Tie a Thorax-Style Sulphur Dun

Sulphur Fly Patterns – Tagged Sulphur – West Branch Angler

14 CDC Sparkle Dun - Sulphur. The Sulphur mayflies are found in the northeast and midwest states in the US. They hatch around May and June.

CDC Sparkle Dun - Sulphur - Mayfly Dry - Fly Fishing Flies