Formica rufibarbis var. occidua Wheeler, 1913i: 517 (w.q.) U.S.A. (California). Nearctic.

Primary type information: Primary type material: lectotype worker (by designation of Francoeur, 1973: 254). Primary type locality: lectotype U.S.A.: California, Palo Alto (H. Heath & W.M. Mann). Primary type depository: AMNH. Secondary type information: Secondary type material: paralectotype workers (number not stated). Secondary type locality: same as for lectotype. Secondary type depository: AMNH.