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.
These nymphs may be the best swimmers of all North American mayflies.
This mayfly was collected from the Namekagon River in Wisconsin on January 19th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.