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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Byhaugh
Hawaii

Posts: 56
Byhaugh on Apr 22, 2014April 22nd, 2014, 11:58 am EDT
This is the photo.
Thanks!

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Byhaugh
Hawaii

Posts: 56
Byhaugh on Apr 23, 2014April 23rd, 2014, 10:11 am EDT
Sorry,
I know it would help to have a better photo, but this is the best I can do.
Surely someone can suggest an identification?

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Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Apr 23, 2014April 23rd, 2014, 1:31 pm EDT
Hi Mack,

Although I also believe to be of family Baetidae, it doesn't have the hind wing profile I would associate with it being of genus Callibaetis.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Apr 23, 2014April 23rd, 2014, 6:02 pm EDT
Roger is right, IMO. Where & when was this fly collected? Size?
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
Byhaugh
Hawaii

Posts: 56
Byhaugh on Apr 24, 2014April 24th, 2014, 5:22 am EDT
Here is another (better) picture


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Entoman
Entoman's profile picture
Northern CA & ID

Posts: 2604
Entoman on Apr 24, 2014April 24th, 2014, 3:44 pm EDT
Hi Byron,

The latest photo is of a mayfly in an entirely different family from your first one. Do you have answers to my questions posted above?
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
Byhaugh
Hawaii

Posts: 56
Byhaugh on Apr 24, 2014April 24th, 2014, 4:45 pm EDT
Ento,
I know, but it also is up for identification. Pic. Is a mayfly from Argentina.
Given its speckled nature and that it is from a lake I thought Calibaetis. But it has large hind wings. Could it be related to the Calibaetis??
Thanks

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