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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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Mayfly Genus Ironodes

This Western genus is closely related to Epeorus and its biology is similar. The only species recognized as important to fly anglers is Ironodes nitidus.

Where & when

In 10 records from GBIF, adults of this genus have been collected during June (60%), May (20%), March (10%), and July (10%).

In 5 records from GBIF, this genus has been collected at elevations ranging from 450 to 5200 ft, with an average (median) of 3600 ft.

Genus Range

Specimens of the Mayfly Genus Ironodes

1 Female Spinner

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Mayfly Genus Ironodes

Genus Range
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