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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Clostoeca disjuncta (Northern Caddisfly) Caddisfly Larva Clostoeca disjuncta (Northern Caddisfly) Caddisfly Larva

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.

11 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.

Female Epeorus vitreus (Sulphur) Mayfly Dun Pictures

Lateral view of a Female Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Dun from the Namekagon River in Wisconsin

Female Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Dun from the Namekagon River in Wisconsin

Dorsal view of a Female Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Dun from the Namekagon River in Wisconsin

Ventral view of a Female Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Dun from the Namekagon River in Wisconsin

This mayfly was collected from the Namekagon River in Wisconsin on June 8th, 2005 and added to Troutnut.com by Troutnut on May 26th, 2006.

Discussions of this Dun

Not Maccaffertium, E. vitreus female

1 replies

Posted by GONZO on Oct 19, 2006

Last reply on Oct 19, 2006 by Troutnut

This one seems to have slipped by. It is a classic Pink Lady (Epeorus vitreus female)--unmarked wings, dark humeral vein, upward slanting (weak) basal costal crossveins, and 1st two tarsal segments nearly equal.

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