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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 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.

About "Mystery Creeks": If you recognize one of these, you already understand why I'm keeping it a secret. I'm not as strict as some anglers about hiding where I fish, mostly because I don't expect to substantially affect fishing pressure on already well-known or simply unpopular waters. But there are some gems where I don't want to add a single unfamiliar bootprint to the mix, due to the fishing, their wild character, or keeping a friend's secret. They're all "Mystery Creek" here—even the lakes.

Landscape & scenery photos from Mystery Creek # 23

The Mystery Creek # 23 in New York
This beautiful brookie comes from a very remote, crystal-clear small stream in the Catskills.
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
Lena wading across the riffle to catch up with me.

From the Mystery Creek # 23 in New York
The clear little stream I was fishing is fed by a tiny tributary running across a beautiful bed of nothing but moss.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York

Underwater photos from Mystery Creek # 23

Well, this is one way to make 'em pose... keep them on the line!

This one settled next to the camera pretty nicely as soon as I let off the tension.

From the Mystery Creek # 23 in New York
I love this mossy plant on so many of the rocks in this stream.

From the Mystery Creek # 23 in New York
Not a bad home if you're a brook trout.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
I got a nice picture of the pool these salamander larvae inhabit a few weeks later.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
Underwater moss and riffle bubbles.

From the Mystery Creek # 23 in New York

Closeup insects by Troutnut from Mystery Creek #23 in New York

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