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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
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

Lateral view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Henry's Fork of the Snake River in Idaho
Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Henry's Fork of the Snake River in Idaho
Dorsal view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Henry's Fork of the Snake River in Idaho
Ventral view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Henry's Fork of the Snake River in Idaho
Ruler view of a Female Callibaetis ferrugineus (Baetidae) (Speckled Dun) Mayfly Spinner from the Henry's Fork of the Snake River in Idaho The smallest ruler marks are 1 mm.

This mayfly was collected from the Henry's Fork of the Snake River in Idaho on August 1st, 2020 and added to Troutnut.com by Troutnut on August 18th, 2020.


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Female Callibaetis ferrugineus (Speckled Dun) Mayfly Spinner Pictures

Collection details
Location: Henry's Fork of the Snake River, Idaho
Date: August 1st, 2020
Added to site: August 18th, 2020
Author: Troutnut
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