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Millcreek has attached these 2 pictures to aid in identification. The message is below.
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MillcreekNovember 26th, 2016, 4:25 pm
Healdsburg, CA

Posts: 306
These nymphs were identified using "The Isoperla of California (Plecoptera; Perlodidae); Larval Descriptions and a Key to 17 Western Nearctic Species" by John B. Sandberg. http://www2.pms-lj.si/illiesia/papers/Illiesia07-22.pdf

The nymphs are approximately 7mm in length excluding cerci and antennae. This is less than the size given in the article but these are early instars.

They were collected on November 24th, 2016 from the Russian River. They were collected in about 16 inches of water in glides with a bottom of gravel and cobble.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
PaulRobertsNovember 28th, 2016, 8:10 am
Colorado

Posts: 1755
Very pretty critters!
Jmd123November 28th, 2016, 3:13 pm
Oscoda, MI

Posts: 2138
I agree with Paul - stoneflies seem to be the most colorful of the aquatic nymphs. Of course, somebody on here (Eric or Roger?) will show me a colorful mayfly nymph or caddis larva I wasn't aware of...

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
OldredbarnDecember 5th, 2016, 6:32 pm
Novi, MI

Posts: 2580
Yes...to all, but to me its all about camouflage! It is incredible how gaudy they may look in a petri dish, but they probably disappear on the bottom of the stream...

A month or so back I was watching ducks on a forested pond out by Jackson Michigan. It was chaos! There were geese and ducks everywhere...Migration was in its early stages.

I had my binocs and I was scanning the surface and there was a male Wood duck in all his glory...One of natures show-offs. He had nearly disappeared on the surface as he glided across the pond trying to get away from me. Somehow his coloration blended in with the reflections on the pond...Autumn leaves etc...

It was an eye opener for me.

Maybe he looks just right to the females, or maybe that color combo helps him blend in and survive. Just right for a bird that hangs out in a forest.
"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
PaulRobertsDecember 6th, 2016, 8:05 am
Colorado

Posts: 1755
Those little buggers are cute! I bet their mama's and papa's think so too. And I bet the trout even give em a pass. How could they not? In fact I've never caught a trout on a super-realistic baby Isoerla imitation. Don't even carry one. Bet you don't either.

I bet it's the same for male woodducks. Ever seen a goshawk snatch one out of the air in front of you? I haven't. Bet you haven't either.

Actually, it's probably not about camo, or at least mostly so. It's all show, and likely at some higher risk. The hens show us what a woodduck, or mallard, looks like when it needs camo. Note too that drakes lose some of that finery outside the breeding season. Woodies are spooky things though, and at a distance they all look sooty and fly "under the radar" -low and fast and prefer to stick to cover. One really has to get close to fully appreciate a male woody.

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