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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.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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 Callibaetis ferrugineus (Speckled Dun) Mayfly Spinner Pictures

These adults are probably C. ferrugineus.

Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Flathead River-lower in Montana
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Flathead River-lower in Montana
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Flathead River-lower in Montana

This mayfly was collected from the Flathead River-lower in Montana on August 13th, 2009 and added to Troutnut.com by Bnewell on June 27th, 2011.


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Female Callibaetis ferrugineus (Speckled Dun) Mayfly Spinner Pictures

Collection details
Location: Flathead River-lower, Montana
Date: August 13th, 2009
Added to site: June 27th, 2011
Author: Bnewell
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