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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.

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington
This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
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 Nemouridae (Forestflies)

Where & when

Time of year : Late winter to mid-spring

In 357 records from GBIF, adults of this family have mostly been collected during April (27%), May (22%), March (15%), June (15%), July (8%), and February (6%).

In 120 records from GBIF, this family has been collected at elevations ranging from 20 to 11135 ft, with an average (median) of 6070 ft.

Family Range

Specimens of the Stonefly Family Nemouridae

1 Male Adult
3 Female Adults
1 Adult
2 Nymphs

Discussions of Nemouridae

deligon
2 replies
Posted by Deligon on Jan 15, 2010
Last reply on Jan 22, 2010 by Martinlf
FISHED THE HIWASSEE RIVER IN TENN , TODAY JAN 15 2010 WEATHER HIGH 50,S
AFTER A COUPLE OF WEEKS OF TEMPS IN THE TEENS, EXPECTED MIDGE HATCH,
WE HAVE A SHAD KILL WHICH I WANTED TO FISH STREAMERS HOPING TO TAG A BIG BROWN. BUT THE WINTER STONEFLY HATCH TOOK THE SHOW. DRY FLY FISHING IN JAN. WHAT IS THE LIFE CYCLE OF THESE FLIES? CAN THEY TOLERATE THE COLD NIGHT TEMPS? DO THEY EAT AND DRINK? WHOW DO THEY MATE?
THE MORE I LEARN THE MORE I DISCOVER I DON'T KNOW

DELIGON

Start a Discussion of Nemouridae

References

Stonefly Family Nemouridae (Forestflies)

Taxonomy
6 genera (Lednia, Nanonemoura, Ostrocerca, Paranemoura, Shipsa, and Visoka) aren't included.
Family Range
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