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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 Species Paragnetina media (Embossed Stoneflies)

This is one of the major species of the Perlidae family, perhaps the most important in the East.

Where & when

Time of year : Late June through late July

In 67 records from GBIF, adults of this species have mostly been collected during June (33%), July (24%), May (21%), August (9%), and April (6%).

In 10 records from GBIF, this species has been collected at elevations ranging from 600 to 3802 ft, with an average (median) of 1148 ft.

Species Range

Hatching behavior

Time of day : Early nighttime

Egg-Laying behavior

Time of day: Dusk

Specimens of the Stonefly Species Paragnetina media

1 Female Adult
3 Nymphs

Start a Discussion of Paragnetina media


Stonefly Species Paragnetina media (Embossed Stoneflies)

Species Range
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