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.
Adults were collected from the North Fork of the Touchet River at Touchet Corral, 21 Sept. One photo is the swarm of males over the stream about 3 PM, air temp about 66 degree.
This mayfly was collected from the Touchet River in Washington on September 21st, 2011 and added to Troutnut.com by Bnewell on September 23rd, 2011.