Female Procloeon (Tiny Sulphur Duns) Mayfly Dun Pictures

Had a good March Brown hatch on the Beaverkill yesterday. Needed big flies (size 8 - 10) to match it.

Fly Fishing Mayfly Nymph Dun Spinner - Methods & Entomology

Eastern Sulphur/Pale Evening Dun (Selected Aquatic Insects of Massachusetts) · iNaturalist

30 Eintagsfliege Mayfly-Ideen eintagsfliege, fliegenbinden, eintagsfliegen

Dry Fly Fishing: The Stages of the Sulphur Hatch - Fulling Mill Blog

Jenny Spinners

TomSutcliffe - The Spirit of Fly Fishing

Mayfly Family Baetidae (Blue-Winged Olives) hatch & pictures

Yellow May Dun life cycle and 3 great fly patterns

Eastern Sulphur/Pale Evening Dun (Selected Aquatic Insects of Massachusetts) · iNaturalist

Female Procloeon (Tiny Sulphur Duns) Mayfly Dun Pictures

20+ Mayfly Dun Stock Photos, Pictures & Royalty-Free Images - iStock

Entomology Bookshelf