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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
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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Stonefly Genus Cultus (Springflies)


Where & when

In 9 records from GBIF, adults of this genus have been collected during May (56%), June (22%), August (11%), and April (11%).

In 3 records from GBIF, this genus has been collected at elevations of 1227, 1921, and 2844 ft.

Genus Range

Specimens of the Stonefly Genus Cultus

1 Nymph

Start a Discussion of Cultus

Stonefly Genus Cultus (Springflies)

Genus Range
Common Name
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