Ammoplanops arenarum sp. nov. is described from male specimens collected in Texas, New Mexico, and Arizona, United States. The species is closely related to A. moenkopi Pate, 1939 from which it differs primarily by the shape of the pregenital sterna. A revised key to Nearctic Ammoplanops Gussakovskij, 1931 species is provided, removing Pulverro irwini (Bohart & Smith, 1978), which previously had been incorrectly placed in Ammoplanops. Orbital foveae are reported for the first time for several species of Ammoplanops and Pulverro, a morphological feature hitherto only known from Ammoplanellus Gussakovskij, 1931 within the family Ammoplanidae.