Name this mayfly

Thanks for your input. I’m inclined to consider the Hex as a lake species. Taxon, Sculpin Swinger, and Cabezon are offering better possibilities without being able to examine a specimen.
Hexagenia limbata hatch from the Columbia River in the vicinity of Wanapum and Priest Rapids dams. Probably from the reservoirs rather than downstream of Priest Rapids.
 
Back
Top