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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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Landscape & scenery photos from the Gulkana River

The Gulkana River in Alaska
A Bonaparte's Gull perched on a rock.

From the Gulkana River in Alaska
The Gulkana River in Alaska
There's a fish-cleaning table right IN the river at this landing.  Driving out on the gravel bar is the norm, too.  It was a good place to field-dress my sockeye salmon.  Tossing the guts out into the river has them devoured by hungry gulls within seconds.  That's illegal in many places, but in Alaska it's the preferred way of dealing with fish waste: these ecosystems are driven by dead salmon and fully equipped to deal with it.

From the Gulkana River in Alaska
The fish really turned on Friday morning, and I caught this very pretty 17-incher
The Gulkana River in Alaska
This is my dad's first wild Alaskan rainbow trout.
Closeup of Josh's big rainbow
This isn't quite the size of salmon I was looking for on this trip...
The Gulkana River in Alaska
Turbulent Class III-IV waters.

From the Gulkana River in Alaska
The Gulkana River in Alaska
A Bonaparte's Gull cruises low over a rapids.

From the Gulkana River in Alaska
Here I'm netting a nice rainbow in the rapids.

From the Gulkana River in Alaska
The Gulkana River just below Summit Lake in Alaska
The Gulkana River in Alaska
The Gulkana River in Alaska
The Gulkana River in Alaska

References

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