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

> > Sialis sp.

Millcreek has attached these 4 pictures to aid in identification. The message is below.
View Full SizeView Full Size (1.6X larger)
View Full SizeView Full Size (2X larger)
View Full SizeView Full Size (2.1X larger)
View Full SizeView Full Size (2X larger)
MillcreekDecember 1st, 2016, 12:12 pm
Healdsburg, CA

Posts: 297
This species, Sialis, also known as an alderfly, was identified to genus using Merritt, Cummins And Berg. There is no key to the California species of Sialis larvae.

They are usually found in slackwater areas of rivers and streams with a silt bottom and dead leaves. This one was found in the Russian River and measures about 16mm.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonDecember 2nd, 2016, 3:05 pm
Site Editor
Plano, TX

Posts: 1271
Very cool, Mark. I believe larvae are also found in lakes and ponds.
Roger Rohrbeck
www.FlyfishingEntomology.com
MillcreekDecember 2nd, 2016, 6:03 pm
Healdsburg, CA

Posts: 297
Roger-

They are pretty neat little animals. Yeah, they do live in ponds and lakes. And I believe they are also one of the few aquatic insects that pupate on land.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonDecember 2nd, 2016, 8:00 pm
Site Editor
Plano, TX

Posts: 1271
Mark-

Right, the Megalopterans and most aquatic Coleopterans.
Roger Rohrbeck
www.FlyfishingEntomology.com
CrenoDecember 4th, 2016, 10:10 am
Grants Pass, OR

Posts: 264
There are also some primarily terrestrial caddis (see Anderson 1967 for a great discussion of Philocasca demita) and a couple where larvae leave the water and pupate terrestrially. There is still alot to be learned about caddis life history in intermittent aquatic systems.
CrepuscularDecember 5th, 2016, 8:29 am
Boiling Springs, PA

Posts: 910
There are also some primarily terrestrial caddis (see Anderson 1967 for a great discussion of Philocasca demita) and a couple where larvae leave the water and pupate terrestrially. There is still alot to be learned about caddis life history in intermittent aquatic systems.


Great stuff here.

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: trying to figure out
In the Insect Family Corydalidae by Buggy
1Apr 19, 2009
by GONZO
Re: Farmington River Mayfly
In the Identify This! Board by Phels29
2Feb 25, 2015
by Byhaugh
Re: strange green worm
In the Identify This! Board by Trtklr
2May 23, 2009
by Wbranch
Re: Neophylax larvae and pupae
(9 more)

In the Photography Board by Millcreek
3Nov 27, 2014
by Millcreek
Onocosmoecus larvae and cases
(3 more)

In the Photography Board by Millcreek
0
Re: Tinodes sp.
(1 more)

In the Photography Board by Millcreek
3Feb 24, 2015
by PaulRoberts
Capnia umpqua
(2 more)

In the Photography Board by Millcreek
0
Re: Ochrotrichia tenuata
(2 more)

In the Photography Board by Millcreek
1May 10, 2015
by PaulRoberts
Re: How
In Psephenus Beetle Larva by Okeydokey01
1Apr 29, 2008
by Taxon
Re: Fly Fishing Southwest Idaho - Trout Lakes/Streams
In General Discussion by Dry4Flies
2Jul 26, 2013
by Sayfu
Most Recent Posts
Re: Valuable resource
In the Identify This! Board by CaseyP
Re: Hello....New to the forum
In General Discussion by OldHasBeen
Re: Double Surgeons Knots Are Breaking
In General Discussion by Mshumrick (PABrownie replied)
Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum
Re: Long-time reader, never-time poster? Start here!
In General Discussion by Troutnut (Martinlf replied)
Re: Free Stream Macroinvertebrate Identification Cards
In General Discussion by LowBudget (CaseyP replied)
Re: Site updates from July 29, 2017
In Site Updates by Troutnut (Martinlf replied)
Re: A surprise partial skunking on a little mountain stream
In Site Updates by Troutnut