Header image
Enter a name
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.

Lateral view of a Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Female Sweltsa fidelis (Sallfly) Stonefly Adult Pictures

In Baumann's Stoneflies of the Rocky Mountains, this specimen keys to Sweltsa fidelis, but the number of species in that key is fairly small and it might not be accurate.

Lateral view of a Female Sweltsa fidelis (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana
Female Sweltsa fidelis (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana
Ventral view of a Female Sweltsa fidelis (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana
Dorsal view of a Female Sweltsa fidelis (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana
Ruler view of a Female Sweltsa fidelis (Chloroperlidae) (Sallfly) Stonefly Adult from the Madison River in Montana The smallest ruler marks are 1 mm.

This stonefly was collected from the Madison River in Montana on June 30th, 2019 and added to Troutnut.com by Troutnut on July 17th, 2019.


Start a Discussion of Adult

Female Sweltsa fidelis (Sallfly) Stonefly Adult Pictures

Collection details
Location: Madison River, Montana
Date: June 30th, 2019
Added to site: July 17th, 2019
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy