(BG) Tiger Crane Fly (Nephrotoma ferruginea) 18.5mm 5/10/14 Newark, DE - Nephrotoma has short and slanted Rs vein

http://bugguide.net/node/view/941903/bgimage

comparison of short and long Rs vein:
http://iz.carnegiemnh.org/cranefly/images/Photos/collarispedunculata.JPG

better example of short/oblique Rs and M1 vein:
http://iz.carnegiemnh.org/cranefly/images/Photos/Nephrotoma_alterna_wing_female.jpg