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.
Taxon on Oct 6, 2009October 6th, 2009, 7:18 pm EDT
These Predaceous Diving Beetle adults were collected in a kick-net sample from a W. WA foothills river. Although adults, they are barely more than 2mm in length, and have really incredible swimming speed for their size. Although they have been identified to genera as Oreodytes, I am hoping a Dytiscid expert will see this post, and be identify them to species.