Primary type information:
Primary type material: holotype major worker. Primary type locality: Mexico: Chihuahua, 16 mi. E Cuauhtemoc, 5900 ft, 4.v.1953 (W.S. Creighton). Primary type depository: LACM.
Secondary type information:
Secondary type material: 179 paratype major and minor workers, 2 paratype queens, 2 paratype males. Secondary type locality: same as for holotype. Secondary type depositories: AMNH, BMNH, LACM, MCZC, USNM.