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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.

Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Swauk Creek in Washington
I'm not aware of any way to tell the two species of Doroneuria apart as nymphs, so this one is classified to species based on location alone. Doroneuria baumanni is found in the Cascades and in Washington, and the other species is not known here yet.
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 Family Leuctridae (Needleflies)

Leuctra is the only genus of any known importance to trout anglers. Their wings are rolled to a needle-like point; hence the common name, needle flies.

Where & when

In 70 records from GBIF, adults of this family have mostly been collected during June (21%), March (20%), February (14%), April (11%), May (11%), August (10%), and July (6%).

In 12 records from GBIF, this family has been collected at elevations ranging from 52 to 4203 ft, with an average (median) of 2559 ft.

Family Range

Specimens of the Stonefly Family Leuctridae

4 Adults

Start a Discussion of Leuctridae


Stonefly Family Leuctridae (Needleflies)

2 genera (Despaxia and Pomoleuctra) aren't included.
Family Range
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