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.

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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

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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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Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner Pictures

I only caught a couple of these, and they were both females, so I'm not sure I'll be able to identify it any further.

Lateral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Dorsal view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Ventral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin

Ruler view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin The smallest ruler marks are 1 mm.

This mayfly was collected from Devil's Creek in Wisconsin on June 14th, 2021 and added to Troutnut.com by Troutnut on June 21st, 2021.

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