Myrmecocystus perimeces Snelling, 1976: 106, figs. 234-240 (w.q.) MEXICO (Baja California). Nearctic.

Primary type information: Primary type material: holotype worker. Primary type locality: Mexico: Baja California, El Molino, 0.5 mi. S Bahia San Quintin, 0-50 ft, 29.iii.1970 (E.M. Fisher). Primary type depository: LACM. Secondary type information: Secondary type material: > 57 paratype workers, 1 paratype queen. Secondary type localities: paratype workers (number not stated), 1 paratype queen with same data, 32 paratype workers Baja California, Bahia San Quintin, 21.v.1952 (W.S. Creighton), 25 paratype workers Baja California, San Antonio del Mar, 0 ft, 27.v.1952 (W.S. Creighton). Secondary type depositories: AMNH, LACM, MCZC, USNM.