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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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington

This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.

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.

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Male Ephemerella subvaria (Hendrickson) Mayfly Dun Pictures

Ruler view of a Male Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the West Branch of the Delaware River in New York The smallest ruler marks are 1/16".

Ventral view of a Male Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the West Branch of the Delaware River in New York

Male Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the West Branch of the Delaware River in New York

Lateral view of a Male Ephemerella subvaria (Ephemerellidae) (Hendrickson) Mayfly Dun from the West Branch of the Delaware River in New York

This mayfly was collected from the West Branch of the Delaware River in New York on May 7th, 2005 and added to Troutnut.com by Troutnut on May 16th, 2006.

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