PaleoDB taxon number: 209055
Full reference: S. H. Scudder. 1890. The Tertiary Insects of North America. Report of the United States Geological Survey of the Territories XIII:1-734
Sister taxa: none
Type specimen: Packard 4, an exoskeleton (tolerably well preserved). Its type locality is Green River (Packard Collection), which is in a Bridgerian lacustrine - large diatomite/shale in the Green River Formation of Wyoming.
Average measurements (in mm): body 5.00 x 1.90, wing 4.50 x 1.75