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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.

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.
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.
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Stenonema (March Browns and Cahills) Mayfly Nymph Pictures

Stenonema (Heptageniidae) (March Browns and Cahills) Mayfly Nymph from Salmon Creek in New York
Stenonema (Heptageniidae) (March Browns and Cahills) Mayfly Nymph from Salmon Creek in New York
Ventral view of a Stenonema (Heptageniidae) (March Browns and Cahills) Mayfly Nymph from Salmon Creek in New York
Dorsal view of a Stenonema (Heptageniidae) (March Browns and Cahills) Mayfly Nymph from Salmon Creek in New York
Stenonema (Heptageniidae) (March Browns and Cahills) Mayfly Nymph from Salmon Creek in New York

This mayfly was collected from Salmon Creek in New York on March 29th, 2006 and added to Troutnut.com by Troutnut on April 7th, 2006.


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Stenonema (March Browns and Cahills) Mayfly Nymph Pictures

Collection details
Location: Salmon Creek, New York
Date: March 29th, 2006
Added to site: April 7th, 2006
Author: Troutnut
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