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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 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 Ephemerella subvaria (Hendrickson) Mayfly Spinner Pictures

This one's a bit bedraggled because it was rainy and I had a hard time keeping anything dry, including the container I was putting mayflies in. I was practically juggling up there balanced on a rock trying to catch mayflies and trout at the same time.

This mayfly was collected from the Bois Brule River in Wisconsin on May 19th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.


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Female Ephemerella subvaria (Hendrickson) Mayfly Spinner Pictures

Collection details
Location: Bois Brule River, Wisconsin
Date: May 19th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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