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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
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 Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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.

Amherst Co.,Va.

Posts: 1
Bluemoon on Feb 21, 2011February 21st, 2011, 1:45 pm EST
Have seen lots of pics taken in NY's Catskills.As a teen(mid 60's) i spent time at my aunts house(rt.55A) overlooking the Rondout Reservoir in Sullivan,Co.,NY
I also remember seeing trout in the stream that flowed through the town of Grahamsville which was near by.
Are any of your posted pics of the Rondout Res. or of the stream in Grahamsville ?
Thanks...love your site !
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Feb 21, 2011February 21st, 2011, 5:37 pm EST
I don't have any Rondout Reservoir pics, nor any of the stream (apparently Chestnut Creek) that flows through Grahamsville. I do have some scenery pics from Rondout Creek, which is just up the road a couple miles. It was very pretty but I didn't catch any fish.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Gutcutter's profile picture

Posts: 470
Gutcutter on Feb 22, 2011February 22nd, 2011, 1:31 am EST
but jason, did you find any bugs?
All men who fish may in turn be divided into two parts: those who fish for trout and those who don't. Trout fishermen are a race apart: they are a dedicated crew- indolent, improvident, and quietly mad.

-Robert Traver, Trout Madness
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Bellevue, WA

Posts: 2758
Troutnut on Feb 22, 2011February 22nd, 2011, 7:48 am EST
I don't think I sampled any bugs there. I spent a pretty short amount of time on Rondout, and more on some other creeks in the area that day.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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