Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture.

From the Susitna River in Alaska

Stream photos

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Male Baetidae (Blue-Winged Olive) Mayfly Dun Male Baetidae (Blue-Winged Olive) Mayfly Dun

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington

This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.

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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

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Baetisca obesa (Armored Mayfly) Mayfly Nymph Pictures

This is a neat, unusal view into the gills of a Baetisca nymph.

Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Nymph from the Neversink River (above reservoir) in New York

Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Nymph from the Neversink River (above reservoir) in New York

Artistic view of a Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Nymph from the Neversink River (above reservoir) in New York

Ruler view of a Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Nymph from the Neversink River (above reservoir) in New York The smallest ruler marks are 1 mm.

Dorsal view of a Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Nymph from the Neversink River (above reservoir) in New York

This mayfly was collected from the Neversink River (above reservoir) in New York on May 6th, 2007 and added to Troutnut.com by Troutnut on May 10th, 2007.

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