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.

Waterfalls over smooth bedrock above Titcomb Lakes

From Titcomb Basin in Wyoming

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

6 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.

Male Leucrocuta hebe (Little Yellow Quill) Mayfly Spinner Pictures

Lateral view of a Male Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Spinner from the Teal River in Wisconsin

Male Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Spinner from the Teal River in Wisconsin

Dorsal view of a Male Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Spinner from the Teal River in Wisconsin

Artistic view of a Male Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Spinner from the Teal River in Wisconsin

This mayfly was collected from the Teal River in Wisconsin on July 2nd, 2005 and added to Troutnut.com by Troutnut on April 22nd, 2006.

Discussions of this Spinner

Not Stenacron, probably Leucrocuta

Posted by GONZO on Oct 19, 2006

Last reply on Oct 19, 2006 by GONZO

Size alone would make Stenacron unlikely, but notice the unmarked legs and that the darkest grouping of crossveins is in-between R1 and SC (Stenacron would have them between R1 and R2). Compare this specimen to the one on the Leucrocuta page--they are probably the same species.

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