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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 Species Allocapnia unzickeri (Little Snowflies)

Species Range

Physical description

Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.

Source: Studies On The Stoneflies Of Georgia With The Description Of A New Species Of Soyedina Ricker, New State Records And An Annotated Checklist

was described from Tennessee and is believed to be restricted to the Appalachian Plateau and Cumberland River Valley (Ross & Ricker 1971). This former Tennessee endemic was collected from a 3 rd order stream in the Appalachian Plateau Physiographic Province in the northwest corner of Georgia, 16.9 km south of the Tennessee border.


Start a Discussion of Allocapnia unzickeri

Stonefly Species Allocapnia unzickeri (Little Snowflies)

Taxonomy
Species Range
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