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

> > Gumaga sp.

Millcreek has attached these 6 pictures to aid in identification. The message is below.
View Full SizeView Full Size (2X larger)
Larvae are 10 mm. Cases 11 mm.
Larvae are 10 mm. Cases 11 mm.
View Full SizeView Full Size (1.8X larger)
Larvae are 10 mm. Cases 11 mm.
Larvae are 10 mm. Cases 11 mm.
View Full SizeView Full Size (1.5X larger)
Larvae are 10 mm.
Larvae are 10 mm.
View Full SizeView Full Size (1.3X larger)
Larvae are 10 mm. Cases 11 mm.
Larvae are 10 mm. Cases 11 mm.
Shown Full Size
Larvae are 10 mm.
Larvae are 10 mm.
Shown Full Size
Larvae are 10 mm.
Larvae are 10 mm.
MillcreekFebruary 16th, 2015, 11:22 am
Healdsburg, CA

Posts: 316
This larvae is common to Mill Creek, a tributary of the Russian River. Haven't found it in the river yet, but it's seasonally common in the stream. Keyed it out to genus in Merritt, Cummins and Berg (2008). Curious as to species. Any help would be appreciated.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
PaulRobertsFebruary 16th, 2015, 6:59 pm
Colorado

Posts: 1776
Pretty thing.
GutcutterFebruary 17th, 2015, 8:26 am
Pennsylvania

Posts: 470
Does anybody know how they make that type of case?
Very cool.
Some amazing engineering.
All men who fish may in turn be divided into two parts: those who fish for trout and those who don't. Trout fishermen are a race apart: they are a dedicated crew- indolent, improvident, and quietly mad.

-Robert Traver, Trout Madness
TaxonFebruary 17th, 2015, 11:14 am
Site Editor
Plano, TX

Posts: 1284
Hi Tony-

Does anybody know how they make that type of case?


Caddisfly larvae use a mouthpart gland which extrudes silk as a binding agent to build their cases.
Roger Rohrbeck
www.FlyfishingEntomology.com
CrenoFebruary 17th, 2015, 12:43 pm
Grants Pass, OR

Posts: 282
Gumaga is a great taxa to initiate a discussion of the species concept. There are numerous publications from the Resh Lab involving Gumaga "species". (http://nature.berkeley.edu/reshlab/) Ya probably should start with Jackson and Resh 1998. (Jackson, John K., Resh, Vincent H. 1998. Morphologically cryptic species confound ecological studies of the caddisfly genus Gumaga (Trichoptera: Sericostomatidae) in northern California. Aquatic Insects 20: 69-84.)

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
Onocosmoecus larvae and cases
(3 more)

In the Photography Board by Millcreek
0
Re: Agapetus larva and pupa
(8 more)

In the Photography Board by Millcreek
6Jul 7, 2015
by Millcreek
Re: Casemaker Caddis
In General Discussion by Shakeyfly
3Dec 18, 2012
by Risenfly
Re: Ochrotrichia tenuata
(2 more)

In the Photography Board by Millcreek
1May 10, 2015
by PaulRoberts
Re: What are these??
In the Photography Board by Keystoner
7Oct 8, 2010
by Konchu
Re: Oecetis sp. larvae and pupae
(3 more)

In the Identify This! Board by Millcreek
9Jul 7, 2015
by Millcreek
Re: Ptilostomis?
In the Identify This! Board by Taju
3Nov 15, 2008
by GONZO
Re: sedge larva
In Rhyacophila fuscula Caddisfly Larva by HELENE
4Aug 9, 2012
by Sayfu
Re: My setae style chart,Kurt ,Luke.
In the Identify This! Board by Brookyman
4Dec 18, 2012
by Brookyman
Re: Mayfly hatch in aquarium - Leptophlebiidae?
In the Identify This! Board by LowBudget
4Apr 13, 2014
by Brookyman
Most Recent Posts
Re: Winooski River and tribs
In General Discussion by Vtbrowns57
Re: How do you guys time your hooksets?
In General Discussion by Partsman (Martinlf replied)
Re: Euro Nymph Rod
In Gear Talk by Wbranch (Martinlf replied)
Re: Bead head or not???
In Beginner Help by Gt2003 (Jmd123 replied)
Re: Where are they now?
In Gear Talk by Wbranch (Jmd123 replied)
Re: Penns Bugs
In Penn's Creek by Martinlf (Dmcwil01 replied)
Re: Sinking line reccomendation for Stillwater fishing
In Gear Talk by EasyPeasy (Jmd123 replied)
Re: Fly Box Redesign
In General Discussion by Wesjohns8 (Jmd123 replied)
Re: Some Fly Boxes
In the Photography Board by Wbranch
South fork sauk
In The South Fork Sauk River by Russell_O