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.
I collected this one as a dun, and she molted into a spinner in my room.
This mayfly was collected from unknown in Wisconsin on May 26th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.