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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.

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.
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Baetisca columbiana (Armored Mayfly) Mayfly Nymph Pictures

This is also a very rare mayfly. This specimen was the first ever collected in western Montana. Only 5 specimens have been collected from this large river.

This mayfly was collected from the Flathead River-lower in Montana on July 5th, 2007 and added to Troutnut.com by Bnewell on June 26th, 2011.


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Baetisca columbiana (Armored Mayfly) Mayfly Nymph Pictures

Collection details
Location: Flathead River-lower, Montana
Date: July 5th, 2007
Added to site: June 26th, 2011
Author: Bnewell
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