Key to females of species of genus Ortholaba
1. Face with very sparse, fine and indistinct punctures; apical half of Clypeus darkish red; mandible (except the apical tooth) and hind coxa reddish brown............................ ............................................................................................................ O . laevis, sp. nov. Face with dense and distinct punctures on its center portion; clypeus, mandible and hind coxa black .................................................................................. O . tenuis Townes