Pepsine wasp from southern Chiricahua Mnts - Entypus aratus -
Tex Canyon, Cochise County, Arizona, USA July 23, 2013
Full-size image here. Note the single long "tooth" of the mandible; the serrations along the dorsal edge of the hind tibiae; and how the subdiscoideus vein is straight (rather than decurved) at its base.