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

> > rhyacophila/green sedge

GooseSeptember 13th, 2006, 5:47 am
Posts: 77Jason, first of all, great photos of the caddis larva. Questions: Using Fontaine's emerger patterns, would you tie this fly with a green body, dark throax, and tan or brown antron for the sheath (bubble)? Is the brown case the green sedge is in what we're trying to simulate with the antron bubble? I hope these questions are understandable. Thanks, Goose
TroutnutSeptember 13th, 2006, 9:05 am
Administrator
Bellevue, WA

Posts: 2548
Well, the emerger is going to be a pupa rather than a larva, so you would want to imitate something that looks like this specimen.

There's one important feature you can't see in my pictures: just when it's about to emerge, the fly supposedly secretes some air bubbles underneath the outer skin of the pupa to buoy it to the surface. I haven't seen this myself, but I trust LaFontaine's observations. The air bubbles give it a sparkly look, which he started to imitate with the antron bubble.

His rationale was that the structure of the yarn traps little air bubbles in the same way as the actual pupa, so the sparkling would come from the bubbles rather than the yarn itself. This strikes me as a little strange, since I can't get the patterns to trap much air and the sparkling in the yarn itself seems much more prominent.

Since the yarn is really meant to help imitate bubbles trapped under the skin of the body, I think it should be roughly the same color as the body. Trial and error might prove me wrong, but there's no apparent imitative reason to make the colors different.

I would tie the imitation with a brown/tan thorax and wing pads, and a green body and green antron sheath. I haven't fished a really good Rhyacophila emergence so I don't know how well this would work, but those would be my choices based on looking at the insect.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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: Anybody know the genus and species?
In Isogenoides hansoni Stonefly Nymph by Troutnut
8Feb 12, 2009
by Troutnut
Re: Grannom Caddis Colors
In Fly Tying by Lastchance
4Mar 21, 2010
by Lastchance
Re: maggot ball
In Fly Tying by Bowmandjk
4Nov 6, 2007
by Bowmandjk
Re: versimilitude
In Fly Tying by CaseyP
4Jul 2, 2009
by CaseyP
Re: LaFontaine Emergent Pupa
In Fly Tying by Wbranch
12Feb 2, 2010
by Softhackle
Re: life cycle
In General Discussion by Ladder34
2Aug 28, 2011
by Sayfu
Re: LaFontaine Sparkle Pupa/Emerger Related Topic
In General Discussion by Goose
1Jan 10, 2012
by Doublespey
Re: Caddis Pupae Question
In the Insect Order Trichoptera by PaulRoberts
40Nov 23, 2015
by Martinlf
Re: Beaver Pond(s)?
In General Discussion by TimCat
3Aug 11, 2016
by PaulRoberts
Re: what pattern is this?
In the Identify This! Board by Stawheed
3May 14, 2015
by Stawheed
Most Recent Posts
Re: Best guess at this bug. Smut (Simuliidae)
In General Discussion by Pdcox (Martinlf replied)
Re: Rio Puerco, Northern New Mexico
In Fishing Reports by Red_green_h (Troutnut replied)
Re: Tiny Black Caddis hatch, late fall - Nov 26 to be exact_ Spring Creek Southern MO
In the Caddisfly Family Hydroptilidae by Dai_sca (Pdcox replied)
Must Read This on my New Reel Purchase
In Gear Talk by 6106b
Re: Stonefly?
In the Identify This! Board by Pdcox (Taxon replied)
Re: Streamer rig set up questions
In Gear Talk by Fliesties22 (Martinlf replied)
Iowa Driftless
In General Discussion by KevinB
Re: fall bluewinged olive coloration.
In Fly Tying by Partsman
Re: Thankful
In General Discussion by Martinlf (Strmanglr replied)
Re: My (new) place and its environs
In the Photography Board by Jmd123 (Martinlf replied)