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The Specimen

Isonychia bicolor (Mahogany Dun) Mayfly DunIsonychia bicolor (Mahogany Dun) Mayfly Dun View 13 Pictures
Collected June 14, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by on May 26, 2006

The Discussion

Post Reply
KenlindblomJuly 26th, 2013, 9:24 pm
Posts: 2I have seen Isos with the forward edge of their wings an olive color. These were also on the upper East Branch. I tied some using a permanent marker to tint the leading edges olive. But, it seems that the standard pattern works as well.
TaxonJuly 26th, 2013, 10:52 pm
Site Editor
Royse City, TX

Posts: 1350		Welcome aboard, Ken. Isonychia seem to come in a wide variety of wing colors. Sounds like the ones you observed on the upper East Branch may have looked something like this:



Incidentally, you might want to update your profile with location info so folks aren't forced to guess what part of the world you are from.

Best regards,
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
KenlindblomJuly 27th, 2013, 12:57 pm
Posts: 2The leading edges were a much more prominent green, covering about 25-30 %. The green was quite bright, not a subdued olive.
MartinlfJuly 28th, 2013, 10:02 am
Moderator
Palmyra PA

Posts: 3233		Upper East Branch of the Delaware?

The Iso body colors seem to vary a great deal as well, from green to gray to dark brown.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

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