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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.

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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 Epeorus vitreus (Sulphur) Mayfly Spinner Pictures

I collected this one as a dun, and she molted into a spinner in my room.

This mayfly was collected from unknown in Wisconsin on May 26th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Spinner

Another vitreus
Posted by GONZO on Oct 28, 2008
Last reply on Oct 28, 2008 by GONZO
This looks like another darkish female.

Start a Discussion of Spinner

Female Epeorus vitreus (Sulphur) Mayfly Spinner Pictures

Collection details
Location: unknown, Wisconsin
Date: May 26th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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