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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.

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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Little Sister Sedges

This name reflects the close relationship of Cheumatopsyche to the better-known genus Hydropsyche, the Spotted Sedge.


This common name refers to only one genus. Click its scientific name to learn more.

Caddisfly Genus Cheumatopsyche

These are often called Little Sister Sedges.
To generalize broadly, Cheumatopsyche is found lower in the watershed than the similar genera Hydropsyche and Ceratopsyche. It is also smaller, but there is wide variation in size and color between the species. See the family Hydropsychidae page for life cycle details common to these genera.

The most important trout stream species are Cheumatopsyche campyla and Cheumatopsyche pettiti.
Lateral view of a Cheumatopsyche (Hydropsychidae) (Little Sister Sedge) Caddisfly Pupa from the Namekagon River in Wisconsin
I photographed this one recently dead. It's hard to keep caddis pupae alive for very long in a collection container.

Little Sister Sedges

Scientific Name
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