Header image
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.

Female Baetis (Blue-Winged Olives) Mayfly Dun Pictures

I'm guessing this specimen is in the genus Acerpenna because of the very sharp costal process on her hind wing. I'm guessing pygmaea because it is the most common species.

Editor note: Not Acerpenna. This is most likely Baetis. See comments on this male specimen for rationale. Also compare with the female specimen associated with it.

This mayfly was collected from the Bois Brule River in Wisconsin on July 1st, 2005 and added to Troutnut.com by Troutnut on April 22nd, 2006.

Discussions of this Dun

Posted by Flytyer0423 on Aug 20, 2009
Last reply on Aug 20, 2009 by Flytyer0423
when the one wing is like the one in the picture thats called a crippled mayfly?
4 replies
Posted by Taxon on Jul 1, 2006
Last reply on Sep 21, 2006 by Troutnut

My guess would be Baetis brunneicolor.


Start a Discussion of this Dun:

You must log in at the top of the page to post. If you haven't registered yet, it's this easy:

Troutnut.com is copyright © 2004-2023 (email Jason). privacy policy