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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this 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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Male Hexagenia atrocaudata (Late Hex) Mayfly Spinner Pictures

I found this spinner and a few of his friends bobbing above the river amidst a snowstorm hatch of white Ephoron flies.

This mayfly was collected from the Namekagon River in Wisconsin on August 15th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.


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Male Hexagenia atrocaudata (Late Hex) Mayfly Spinner Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: August 15th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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