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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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.

Pteronarcys dorsata (American Salmonfly) Stonefly Nymph Pictures

Video Clip

Pteronarcys

Featuring: Pteronarcys dorsata Stonefly Nymph

Shot on Feb 6, 2004

Added by Troutnut on Mar 30, 2006

This stonefly was collected from the Namekagon River in Wisconsin on February 7th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Nymph

Salmonfly nymph anatomy

1 replies

Posted by Adirman on Sep 10, 2010

Last reply on Sep 11, 2010 by Dryfly

Hey, what'sm with those wierd fuzzy looking things under its belly and forearms? Is that some sort of traction thing for sticking to stuff?

Salmonfly nymph anatomy

2 replies

Posted by Adirman on Sep 10, 2010

Last reply on Sep 11, 2010 by Adirman

Hey, what'sm with those wierd fuzzy looking things under its belly and forearms? Is that some sort of traction thing for sticking to stuff?

stoneflies

1 replies

Posted by Blackghost on May 1, 2009

Last reply on May 4, 2009 by Martinlf

I haven't tied a lot of stonefly nymphs. In most cases the river I fish don't really have a lot of stoneflies. Where would be the best place to look for stonflies. In fast running water.

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