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

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

Epeorus albertae (Pink Lady) Mayfly Nymph Epeorus albertae (Pink Lady) Mayfly Nymph

Dorsal view of a Epeorus albertae (Heptageniidae) (Pink Lady) Mayfly Nymph from the East Fork Issaquah Creek in Washington

This specimen keys to the Epeorus albertae group of species. Of the five species in that group, the two known in Washington state are Epeorus albertae and Epeorus dulciana. Of the two, albertae has been collected in vastly more locations in Washington than dulciana, suggesting it is far more common. On that basis alone I'm tentatively putting this nymph in albertae, with the large caveat that there's no real information to rule out dulciana.

5 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.

Male Paraleptophlebia sculleni Mayfly Spinner Pictures

For a species not yet reported in my state, I've been surprised to find these in two different locations lately. I was tempted to think they're the more common Paraleptophlebia debilis, but the characteristic big dorsal bump on the claspers just isn't present.

Ruler view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.

Lateral view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington

Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington

Dorsal view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington

Ventral view of a Male Paraleptophlebia sculleni (Leptophlebiidae) Mayfly Spinner from the Middle Fork Snoqualmie River in Washington

This mayfly was collected from the Middle Fork Snoqualmie River in Washington on August 4th, 2019 and added to Troutnut.com by Troutnut on August 5th, 2019.

Start a Discussion of Spinner