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've lost the date information for this specimen and taken a guess.
This mayfly was collected from unknown in Wisconsin on August 1st, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.