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

> > Siphlonurus sp.

Millcreek has attached these 5 pictures to aid in identification. The message is below.
View Full SizeView Full Size (2.3X larger)
Intermediate nymph. About 15 mm (excluding cerci).
Intermediate nymph. About 15 mm (excluding cerci).
View Full SizeView Full Size (2.4X larger)
Intermediate nymph. About 15 mm (excluding cerci).
Intermediate nymph. About 15 mm (excluding cerci).
View Full SizeView Full Size (2.2X larger)
Ventral view of nymph shown in photo above.
Ventral view of nymph shown in photo above.
View Full SizeView Full Size (1.9X larger)
Mature nymph. About 16 mm (excluding cerci).
Mature nymph. About 16 mm (excluding cerci).
View Full SizeView Full Size (1.9X larger)
Mature nymph. About 16 mm (excluding cerci).
Mature nymph. About 16 mm (excluding cerci).
MillcreekApril 2nd, 2015, 12:53 am
Healdsburg, CA

Posts: 343
These nymphs are fairly common in the Russian River. Usually found in slightly warmer, quiet water areas near shore. Substrate usually consists of small gravel and algae-ridden stones.


The nymphs were keyed out with Merritt, Cummins and Berg (2008).
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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.
Most Recent Posts
Re: mean one thing, write another?
In Male Onocosmoecus unicolor Caddisfly Adult by Creno (Troutnut replied)
Stuck on the family ID on this one -- any thoughts?
In Female Plecoptera Stonefly Adult by Troutnut
Site updates from September 17, 2020
In Site Updates by Troutnut
Site updates from September 12, 2020
In Site Updates by Troutnut
Site updates from September 10, 2020
In Site Updates by Troutnut
Site updates from September 9, 2020
In Site Updates by Troutnut
Site updates from August 30, 2020
In Site Updates by Troutnut
Site updates from September 5, 2020
In Site Updates by Troutnut
Site updates from September 4, 2020
In Site Updates by Troutnut
Site updates from September 3, 2020
In Site Updates by Troutnut