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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.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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 Callibaetis ferrugineus (Speckled Dun) Mayfly Spinner Pictures

Ruler view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho The smallest ruler marks are 1 mm.
Lateral view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Dorsal view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Ventral view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Artistic view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from Silver Creek in Idaho

This mayfly was collected from Silver Creek in Idaho on September 4th, 2020 and added to Troutnut.com by Troutnut on September 18th, 2020.


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Female Callibaetis ferrugineus (Speckled Dun) Mayfly Spinner Pictures

Collection details
Location: Silver Creek, Idaho
Date: September 4th, 2020
Added to site: September 18th, 2020
Author: Troutnut
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