Leptothorax ambiguus Emery, 1895 an obsolete combination of Temnothorax ambiguus (Emery, 1895)
Leptothorax curvispinosus subsp. ambiguus Emery, 1895d: 320 (w.) U.S.A. (South Dakota, Ohio, New York). Nearctic.
Primary type information: Hill City [43°56′N 103°34′W], South Dakota, 8 July 1890 (Pergande); CASENT0904763; MCSN Type notes: [Note: type-locality designated as South Dakota by Creighton, 1950a: 263.]
Citations

Extant: 0 valid subspecies (1 obsolete combination)