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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 Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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.
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Troutnut.com User Brett (Brett Billings)

Troutnut.com User Brett (Brett Billings)

Real Name
Brett Billings
Location
Martinsburg, WV
Biography & Thoughts
I am a US Fish & Wildlife Video producer, amateur fly tyer and novice entomologist. Master's project was "An Aquatic Bioassessment of the Cumberland River Tailwater in Southcentral, Kentucky (2004)" through Eastern Kentucky University. Primary advisor was Dr. Guenter Schuster, well-known expert on caddisflies, crayfishes and mussels. I give occasional talks to regional fishing groups and school groups, so I try to stay up on my "bug-ology." Other interests include photography, exploring Appalachian trout streams with my wife, Shelly, and making the occasional fishing rod.
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Brett
Novice entomologist, fly-tyer and photographer

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