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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Lara Riffle Beetle Larva Pictures

Lara (Elmidae) Riffle Beetle Larva from the South Fork Snoqualmie River in Washington

Dorsal view of a Lara (Elmidae) Riffle Beetle Larva from the South Fork Snoqualmie River in Washington

This false-color image with contrast extremely boosted shows the structure of the gills that were sometimes retracted inside the abdomen.

Lara (Elmidae) Riffle Beetle Larva from the South Fork Snoqualmie River in Washington

Ventral view of a Lara (Elmidae) Riffle Beetle Larva from the South Fork Snoqualmie River in Washington

Ruler view of a Lara (Elmidae) Riffle Beetle Larva from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.

This riffle beetle was collected from the South Fork Snoqualmie River in Washington on May 14th, 2022 and added to Troutnut.com by Troutnut on May 16th, 2022.

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