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.
A few days earlier I photographed this same specimen as a dun. The changes between dun and spinner seem particularly dramatic in this species.
This mayfly was collected from Dresserville Creek in New York on April 30th, 2007 and added to Troutnut.com by Troutnut on May 3rd, 2007.