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.

Stream photos

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

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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.

Definition of 'vein R₄₊₅' in Mayflies

Missing Parameter Error: Malformed parameter "vein+R4%2B5".

Vein R₄₊₅: The fourth radial vein in mayflies (denoted R₄₊₅) is the posterior branch of the radial sector. Generic insect veins R₄ and R₅ are combined into a single vein R₄₊₅ in mayfly forewings and often in hindwings. It is a furrow vein (–).

These other words reference the same concept: R₄₊₅ vein, R₄₊₅.

SalmonfliesPteronarcys californica

Definition of 'vein R4+5' in Mayflies

Definition of 'vein R4+5' in Mayflies

Salmonflies
Pteronarcys californica

Definition of 'vein R₄₊₅' in Mayflies

Definition of 'vein R₄₊₅' in Mayflies