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

> > Nectopsyche larva and pupa

Millcreek has attached these 5 pictures to aid in identification. The message is below.
View Full SizeView Full Size (2X larger)
Larvae 12 mm. Case 22 mm.
Larvae 12 mm. Case 22 mm.

View Full SizeView Full Size (2.3X larger)
Pupal case 17 mm.
Pupal case 17 mm.
View Full SizeView Full Size (1.4X larger)
Pupa !3 mm.
Pupa !3 mm.
View Full SizeView Full Size (1.3X larger)
Pupa 13 mm.
Pupa 13 mm.
View Full SizeView Full Size (1.3X larger)
Pupa 13 mm.
Pupa 13 mm.
MillcreekJune 18th, 2015, 5:17 pm
Healdsburg, CA

Posts: 299

I've put up the larva before but not the pupa. The pupa is commonly found attached at both ends to stones. Occasionally it is found attached by the front end to a large stone. It is usually found in slack water.

The common name is White Miller.








"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonJune 19th, 2015, 12:05 am
Site Editor
Plano, TX

Posts: 1272
Mark,

Wow, what gorgeous pupal photos. Don't recall having previously seen a forked terminal process on a caddisfly. Thanks for sharing.
Roger Rohrbeck
www.FlyfishingEntomology.com
MillcreekJune 19th, 2015, 12:36 am
Healdsburg, CA

Posts: 299
Roger,

Several caddisfly pupae have forked terminal processes. Some that come to mind are various Leptoceridae species, some Uenoidae species and some Odontoceridae. Anyway, it's always fun to find something like that.

Mark
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonJune 19th, 2015, 3:14 am
Site Editor
Plano, TX

Posts: 1272
Mark-

Live and learn, I guess! :-)
Roger Rohrbeck
www.FlyfishingEntomology.com
OldredbarnJune 19th, 2015, 10:38 am
Novi, MI

Posts: 2580
Hey guys...How about walking us through the process after this stage?

I'm looking at the pictures where we see the underside of the insect and was wondering...Does all of this continue to the next stage? What I mean is, the wings here seem short...Does the green abdomen drop off or does that remain with the adult?

Maybe this specimen isn't "that" close to "hatching"...

How about a walk through?

Spence
"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
MillcreekJune 19th, 2015, 11:35 am
Healdsburg, CA

Posts: 299
Spence - The abdomen remains with the adult. The wings are somewhat shortened and folded and stay that way until it becomes an adult. You can get an idea of how it works by looking at the exuvia left behind when it transforms from pupa to adult.

http://www.troutnut.com/topic/8669/Neophylax-larvae-and-pupae

Mark
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonJune 19th, 2015, 12:54 pm
Site Editor
Plano, TX

Posts: 1272
Hi Spence-

I sense that your question relates primarily to the disparity of the wing/abdomen length, between the pupal and adult life stages.

With regard to only that specific issue, the abdomen remains essentially the same length in the adult. However the wings of the adult get "inflated" through their venation at time of emergence, such that the longer fore wings end up reaching well beyond the end of the adult abdomen when in their resting position. Hope this helps.
Roger Rohrbeck
www.FlyfishingEntomology.com
OldredbarnJune 19th, 2015, 6:04 pm
Novi, MI

Posts: 2580
Yes it does. Thanks to both of you. 13mm is a pretty fair sized caddis.

Spence
"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

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: caddis pupa & caddis adult for >>>> ID please <<<
(7 more)

In the Identify This! Board by Brookyman
1Aug 27, 2014
by Creno
Re: Ochrotrichia tenuata
(2 more)

In the Photography Board by Millcreek
1May 10, 2015
by PaulRoberts
Re: This is not Ephemera simulans
In Hexagenia limbata Mayfly Nymph by Beardius
1Aug 2, 2008
by Troutnut
Re: Caddis emerger question.
In General Discussion by Opie610
6Jan 8, 2013
by Martinlf
Re: White Mayfly ---- Euphron leukon?
In the Identify This! Board by JumpNotZero
1Sep 9, 2008
by GONZO
Re: deligon
In the Stonefly Family Nemouridae by Deligon
2Jan 22, 2010
by Martinlf
Re: Hydropsychid?
In Hydropsyche Caddisfly Pupa by GONZO
14May 7, 2009
by LittleJ
Re: identification needed
In Rhithrogena impersonata Mayfly Nymph by Kinza
2Feb 6, 2017
by Crepuscular
Re: caddis pupa
In General Discussion by LittleJ
3May 16, 2010
by Creno
Re: what is this fly?
In General Discussion by Jlw_5178
6Apr 22, 2010
by Jlw_5178
Most Recent Posts
Old Nerversink River
In The Neversink River by Mtvernon
Re: One last brookie...and a question about "breathable" waders
In the Photography Board by Jmd123 (Wbranch replied)
Re: best rod for a rank beginner?
In Gear Talk by Roguerat (TimD replied)
Re: tippet connection
In Gear Talk by BillC523 (Roguerat replied)
Fly Line to Leader Connections- Technical Review
In General Discussion by Arnold
Re: tying demo
In General Discussion by Roguerat (CaseyP replied)
Fly Line to Leader Connections
In General Discussion by Arnold
Re: fising
In the Photography Board by Donis1 (Wbranch replied)
Orvis Helios 3 review
In Gear Talk by Offsmike
Re: Finally got an October Caddis
In Site Updates by Troutnut (Wiflyfisher replied)