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.

Stream photos

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In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

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In the Mayfly Genus Tricorythodes by Martinlf

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

10 Recently Added Photos

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

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

Female Acroneuria lycorias (Golden Stone) Stonefly Adult

17 Pictures

Lateral view of a Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York

Collected May 22, 2007 from Aquarium (collected somewhere in Catskills) in New York

Added by Troutnut on June 4, 2007

Collected May 22, 2007 from Aquarium (collected somewhere in Catskills) in New York and added by Troutnut on June 4, 2007

Female Baetisca obesa (Armored Mayfly) Mayfly Dun

12 Pictures

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.

Collected May 22, 2007 from the Neversink River (aquarium-raised) in New York

Added by Troutnut on June 4, 2007

Collected May 22, 2007 from the Neversink River (aquarium-raised) in New York and added by Troutnut on June 4, 2007

Female Stenonema ithaca (Light Cahill) Mayfly Dun

10 Pictures

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.

Collected May 22, 2007 from the Little Juniata River in Pennsylvania

Added by Troutnut on June 4, 2007

Collected May 22, 2007 from the Little Juniata River in Pennsylvania and added by Troutnut on June 4, 2007