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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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Closeup insects by Bnewell from the Touchet River in Washington

Male Ameletus vernalis (Ameletidae) (Brown Dun) Mayfly Dun from the  Touchet River in Washington

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Troutnut
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Bellevue, WA

Posts: 2758
Troutnut on May 3, 2012May 3rd, 2012, 1:34 pm EDT
Very nice photo Bob!
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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