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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.
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.

Stonefly Genus Strophopteryx (Early Brown Stoneflies)

Strophopteryx fasciata is the most important species of Early Brown Stoneflies.

Where & when

In 80 records from GBIF, adults of this genus have mostly been collected during March (38%), February (29%), April (14%), and January (13%).

In 14 records from GBIF, this genus has been collected at elevations ranging from 20 to 2723 ft, with an average (median) of 673 ft.

Genus Range

Specimens of the Stonefly Genus Strophopteryx

2 Male Adults
2 Female Adults
1 Nymph

Start a Discussion of Strophopteryx

References

Stonefly Genus Strophopteryx (Early Brown Stoneflies)

Taxonomy
4 species (Strophopteryx arkansae, Strophopteryx cucullata, Strophopteryx inaya, and Strophopteryx limata) aren't included.
Genus Range
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