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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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Isoperla (Stripetails and Yellow Stones) Stonefly Nymph Pictures

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington
Ventral view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington
Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington
Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington
Artistic view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington
Ruler view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Nymph from Mystery Creek #308 in Washington The smallest ruler marks are 1 mm.

This stonefly was collected from Mystery Creek #308 in Washington on April 23rd, 2023 and added to Troutnut.com by Troutnut on May 2nd, 2023.


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Isoperla (Stripetails and Yellow Stones) Stonefly Nymph Pictures

Collection details
Location: Mystery Creek #308, Washington
Date: April 23rd, 2023
Added to site: May 2nd, 2023
Author: Troutnut
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