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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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Closeup insects by Bnewell from the Touchet River in Washington

Female Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from the Touchet River in Washington

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GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Jul 2, 2011July 2nd, 2011, 8:42 am EDT
This appears to be a female dun.
Troutnut
Troutnut's profile picture
Administrator
Bellevue, WA

Posts: 2758
Troutnut on Jul 2, 2011July 2nd, 2011, 1:40 pm EDT
Thanks Lloyd. I fixed it. When someone is adding as many new specimens as Bob has lately, it's easy to accidentally skip over one of the little dropdown menus and leave it set to the default, and the site doesn't have automatic safeguards against overlooking stuff like that... so the users are the safeguard.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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