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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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Stonefly Species Acroneuria lycorias (Golden Stones)

Where & when

Time of year : Early June through mid-July

This is a major species in the Midwest.

In 27 records from GBIF, adults of this species have mostly been collected during June (44%), May (22%), July (19%), and April (7%).

Species Range

Specimens of the Stonefly Species Acroneuria lycorias

1 Female Adult
2 Nymphs

Start a Discussion of Acroneuria lycorias

References

Stonefly Species Acroneuria lycorias (Golden Stones)

Taxonomy
Species Range
Resources
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