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.

Firehole River Sunset

From the Firehole River in Wyoming

Stream photos

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Amphizoa Beetle Larva Amphizoa Beetle Larva

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington

This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).

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.

Epeorus May Fly

Male Epeorus frisoni Mayfly Dun

9 Pictures

Lateral view of a Male Epeorus frisoni (Heptageniidae) Mayfly Dun from Mystery Creek #23 in New York

I collected this male dun together with a female spinner, a female dun, and another male dun.

Collected September 5, 2006 from Mystery Creek #23 in New York

Added by Troutnut on October 3, 2006

Collected September 5, 2006 from Mystery Creek #23 in New York and added by Troutnut on October 3, 2006

Goose
Posts: 77

Goose on Oct 4, 2006October 4th, 2006, 1:10 am EDT

Nice photos, Jason. Are these the fall Sulphur Mayflies that have been discussed here and on a Pennsylvania web site?

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Oct 4, 2006October 4th, 2006, 4:51 am EDT

I don't think so. This is one of several yellowish species I collected in September, and some of the others were much more widespread. I only found this species on one remote small stream in the Catskills. Surely it's found elsewhere but I don't think it's a major hatch.

Once I've got the rest of the pics online I'll try posting one each on the PA website and see if people can pick their "September peach fly" out of a lineup. Then I'll just have to figure out the species ID, which is no easy task since I've got mostly females.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist