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.

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Holocentropus Caddisfly Larva Holocentropus Caddisfly Larva

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington

This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.

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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.

Aeshna naiad

Millcreek has attached these 2 pictures to aid in identification. The message is below.

Millcreek
Healdsburg, CA

Posts: 344

Millcreek on Nov 21, 2017November 21st, 2017, 2:05 pm EST

These are usually found in slow to stagnant areas in the Russian River. They are approximately 16-20 mm long and are found in the river from June through August.

Jonathan - Are these the dragonfly naiads you saw? They vary quite a bit in coloration.

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

Jmd123

Oscoda, MI

Posts: 2474

Jmd123 on Nov 28, 2017November 28th, 2017, 9:39 am EST

The shape is certainly right! I read your other post and I will definitely have to send you photos next season. They can change when they molt, huh? As far as spectacular color changes go, I saw an octopus go from solid slate grey to spotted all over in an instant, down in Key West when I was a kid. Of course, they have micromuscles controlling the opening and closing of pores to pigment glands, all driven by probably the most developed brain in the invertebrate world! Much as we all love insects, they're just not THAT cool...

Jonathon

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