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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.

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.

Updates from May 22, 2007

Updates from May 22, 2007

Closeup insects by Troutnut from Miscellaneous New York, the Neversink River, and the Little Juniata River in New York and Pennsylvania

Lateral view of a Female Baetisca obesa (Baetiscidae) (Armored Mayfly) Mayfly Dun from the Neversink River (aquarium-raised) in New York
This Baetisca obesa dun hatched out in my aquarium from nymphs collected a couple weeks earlier.
Lateral view of a Female Stenonema ithaca (Heptageniidae) (Light Cahill) Mayfly Dun from the Little Juniata River in Pennsylvania
This female looks very much like a male I collected a few hundred miles away a few days later, so I'm guessing it's the same species, which I believe is Maccaffertium mediopunctatum.

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