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.

A small, old rock wing dam has created an excellent riffle and pool in this classic trout stream.

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

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.

6 Recently Added Photos

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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Stonefly Genus Allocapnia (Little Snowflies)

Allocapnia granulata is the most abundant Capniidae species in the East.

Where & when

In 615 records from GBIF, adults of this genus have mostly been collected during March (29%), February (26%), January (20%), December (11%), and April (10%).

In 82 records from GBIF, this genus has been collected at elevations ranging from 125 to 4856 ft, with an average (median) of 3182 ft.

Genus Range

source

Map of specific collection sites

Discussions of Allocapnia

Little Black Stonefly pics

12 replies

Posted by Adirman on Apr 14, 2018 in the species Allocapnia granulata

Last reply on Apr 21, 2018 by Martinlf

Hey guys, went out on the Neversink for awhile today and had a look around, saw a lot of little dark flies, may be the little black stone fly? Hard to tell cuz looked like Caddis too. Looks like about a size 16? Any pics of available of this species would be great.

Thanks

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