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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Coleoptera (Beetle) Insect Larva Coleoptera (Beetle) Insect Larva

Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek in Washington

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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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Female Cinygmula (Dark Red Quill) Mayfly Dun Pictures

I'm calling this one Cinygmula just based on the general look and the fact that the genus is very common in this river. Official keys can't rule out other Heptageniidae, though.

Lateral view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

Ruler view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1/16".

Ventral view of a Female Cinygmula (Heptageniidae) (Dark Red Quill) Mayfly Dun from the South Fork Snoqualmie River in Washington

This mayfly was collected from the South Fork Snoqualmie River in Washington on June 16th, 2018 and added to Troutnut.com by Troutnut on July 3rd, 2018.

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