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.
This specimen is close to Ameletus vernalis but the wing coloration is missing.
This mayfly was collected from the Touchet River in Washington on June 10th, 2011 and added to Troutnut.com by Bnewell on June 26th, 2011.