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The Specimen

Siphlonurus quebecensis (Gray Drake) Mayfly DunSiphlonurus quebecensis (Gray Drake) Mayfly Dun View 3 PicturesThis one hatched in my house after I brought some nymphs home to photograph.
Collected May 18, 2004 from unknown in Wisconsin
Added to Troutnut.com by on January 25, 2006

The Discussion

GutcutterFebruary 15th, 2017, 6:29 am
Pennsylvania

Posts: 470
Anybody have any abdomen dubbing/ribbing suggestions to imitate this?
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
PaulRobertsFebruary 16th, 2017, 10:38 am
Colorado

Posts: 1776
Really? Spinners?
GutcutterFebruary 16th, 2017, 6:39 pm
Pennsylvania

Posts: 470
Hi, Paul.
I have a few nice patterns for the much thinner and darker spinner.

But I'm interested in abdominal color suggestions for the plump duns.
All I've come up with, so far is something like this:

Thanks in advance.
Tony
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
PaulRobertsFebruary 17th, 2017, 6:22 am
Colorado

Posts: 1776
Hi Tony,
I've not tied them, although I've collected them; Just not in trout water. Are you seeing duns on the water? They supposedly emerge after crawling out, but then that was supposed to be the case for Isonychia too.

What you have there looks pretty good. I found a photo I have of a female dun -taken immediately after it emerged ditch-side. It was very fresh so it was pale -with much pale yellow-olive in it. The image is very poor but I'll post it anyway. I think I have others that may be better. EDIT: I know why it's SO poor -it's a point-n-shoot copy from a 35mm slide. Anyway, maybe you get the gist -they will likely be paler at immediate emergence.

TaxonFebruary 17th, 2017, 2:31 pm
Site Editor
Plano, TX

Posts: 1284
Hi Paul-

Could certainly be wrong, but that sure looks like a female imago to me. :-)
Roger Rohrbeck
www.FlyfishingEntomology.com
PaulRobertsFebruary 17th, 2017, 5:26 pm
Colorado

Posts: 1776
Roger, you could be right. It was quite a while back and now looking at the background, it may have been in my RiverTank. I do have photos (35mm) from a little ditch in a hayfield that was a good 1-1/2mi. from the nearest stream. Pretty sure that is where the above one came from, although I don't remember particulars. I likely have notes somewhere though.
Jmd123February 19th, 2017, 3:47 pm
Oscoda, MI

Posts: 2325
Nice looking flies there, Tony. Won't it be lovely when we can all start floating dry flies again? Might be sooner than later around here, we have an unseasonable warm spell and our waters are thawing out rapidly...

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...

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