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 found Catskill brown trout eagerly surface feeding to this species.
This mayfly was collected from the Beaverkill River in New York on August 22nd, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.