Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

> > Pteronarcys californica nymph



Millcreek has attached these 4 pictures. The message is below.
Shown Full Size
Taken from Russian River. Dec. 24th, 2015. 25 mm.
Taken from Russian River. Dec. 24th, 2015. 25 mm.
Shown Full Size
Taken from Russian River. Dec. 24th, 2015. 25 mm.
Taken from Russian River. Dec. 24th, 2015. 25 mm.
View Full SizeView Full Size (2.4X larger)
Taken from Russian River. June 17, 2013. 30 mm.
Taken from Russian River. June 17, 2013. 30 mm.
View Full SizeView Full Size (2.4X larger)
Taken from Russian River. June 17, 2013. 30 mm.
Taken from Russian River. June 17, 2013. 30 mm.
MillcreekJune 13th, 2016, 10:28 pm
Healdsburg, CA

Posts: 356
These are relatively uncommon in the Russian River. They are more common in its tributaries. Typically they are found in fast glides or riffles.

They can be confused with Pteronarcella or other species of Pteronacys but Pteronarcella have a rounded pronotum and gills on the third abdominal segment while the only other known species of Pteronarcys in the area, Pteronarcys princeps has a less pointed pronotum.
Jmd123June 14th, 2016, 12:56 am
Oscoda, MI

Posts: 2611
Love these big guys! Not sure if our species is the same, ours are pretty much black, and up to a size 2! And you practically have to dig into a log to find them, they like to crawl into crevices in wood. The adults are pretty impressive too!

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
MillcreekJune 14th, 2016, 9:55 am
Healdsburg, CA

Posts: 356
Jonathon - The species are different, but pretty much similar superficially. As far as habitat goes ours seem to prefer a bottom of large gravel and cobbles. The adults are impressive and pretty poor fliers. They just lumber along.

Quick Reply

You have to be logged in to post on the forum. It's this easy:
Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.

Related Discussions

TitleRepliesLast Reply
Re: proteus, biloba, and comstocki
In Pteronarcys biloba Stonefly Nymph by Beardius
1Oct 28, 2008
by GONZO
Help with Pteronarcys species characters?
In Pteronarcys biloba Stonefly Nymph by GONZO
0
Re: Northern Ontario Canada, Stonefly question.
In General Discussion by Snowsquatch
4Sep 4, 2012
by Entoman
Re: pternonarcys
In Pteronarcys dorsata Stonefly Nymph by Flyfisher11
1Feb 26, 2022
by Wiflyfisher
Re: Defensive posture
In Pteronarcys dorsata Stonefly Nymph by Shawnny3
1Jun 29, 2008
by GONZO
Re: Mayfly Species Distribution Maps
In General Discussion by Taxon
13May 5, 2014
by Taxon
Re: Phantom Crane Fly MI
In General Discussion by Brian314
4Sep 2, 2019
by Brian314
Re: parasites?
In Isoperla Stonefly Adult by Litobrancha
9Oct 22, 2006
by GONZO
Re: Stonefly ID Please.
In the Identify This! Board by OldHasBeen
4Apr 27, 2021
by Troutnut
Re: Stone fly on the Niangua River in Missouri
In the Identify This! Board by Pdcox
1Apr 27, 2021
by Taxon
Most Recent Posts
Re: large free living caddis rhyacophila?
In the Identify This! Board by Kjfeen (Taxon replied)