Leptothorax rugatulus subsp. dakotensis Wheeler & Wheeler, 1944: 247 (w.) U.S.A. (North Dakota). Nearctic.

Primary type information: Type-material: 15 syntype workers. Type-locality: U.S.A.: North Dakota, Golden Valley County, Sentinel Butte, 3430 ft (1045 m.), 22.vi.1927 (no collector’s name). Type-depository: unknown.