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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.

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.
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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Drunella grandis (Western Green Drake) Mayfly Nymph Pictures

Dorsal view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the Gallatin River in Montana
Ventral view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the Gallatin River in Montana
Lateral view of a Drunella grandis (Ephemerellidae) (Western Green Drake) Mayfly Nymph from the Gallatin River in Montana

This mayfly was collected from the Gallatin River in Montana on July 2nd, 2019 and added to Troutnut.com by Troutnut on July 18th, 2019.


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Drunella grandis (Western Green Drake) Mayfly Nymph Pictures

Collection details
Location: Gallatin River, Montana
Date: July 2nd, 2019
Added to site: July 18th, 2019
Author: Troutnut
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