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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.

Lateral view of a Female Sweltsa borealis (Chloroperlidae) (Boreal Sallfly) Stonefly Adult from Harris Creek in Washington
I was not fishing, but happened to be at an unrelated social event on a hill above this tiny creek (which I never even saw) when this stonefly flew by me. I assume it came from there. Some key characteristics are tricky to follow, but process of elimination ultimately led me to Sweltsa borealis. It is reassuringly similar to this specimen posted by Bob Newell years ago. It is also so strikingly similar to this nymph from the same river system that I'm comfortable identifying that nymph from this adult. I was especially pleased with the closeup photo of four mites parasitizing this one.
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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Millcreek has attached these 11 pictures. The message is below.
Millcreek
Healdsburg, CA

Posts: 344
Millcreek on Dec 25, 2017December 25th, 2017, 4:26 am EST
These have all been taken from the Russian River within the last month. First from the top are photos of some Baetis tricaudatus and Baetis alius, next are Pteronarcys californica and Isoperla pinta, then a Chimarra sp. and last an Ameletus sp.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Jan 2, 2018January 2nd, 2018, 6:53 am EST
Nice to think that there's a bunch of those still alive right now under all that ice around here, including the Au Sable!

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...

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