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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.

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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Drunella flavilinea (Flav) Mayfly Nymph Pictures

Although the identification is not certain because the nymph is not yet mature, the configuration of tubercles on this one--particularly the forefemora--seems to best match Drunella flavilinea.

Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana
Dorsal view of a Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana
Ventral view of a Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana
Ruler view of a Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana The smallest ruler marks are 1 mm.
Lateral view of a Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana
Drunella flavilinea (Ephemerellidae) (Flav) Mayfly Nymph from the Gallatin River in Montana

This mayfly was collected from the Gallatin River in Montana on July 2nd, 2019 and added to Troutnut.com by Troutnut on July 18th, 2019.


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Drunella flavilinea (Flav) Mayfly Nymph Pictures

Collection details
Location: Gallatin River, Montana
Date: July 2nd, 2019
Added to site: July 18th, 2019
Author: Troutnut
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