Primary type information:
Primary type material: lectotype worker (by designation of Francoeur, 1973: 52). Primary type locality: lectotype U.S.A.: Colorado, Florissant, 8100 ft (W.M. Wheeler). Primary type depository: MCZC.
Secondary type information:
Secondary type material: paralectotype workers (number not stated), 1 paralectotype queen, 2 paralectotype males. Secondary type locality: same as for lectotype. Secondary type depositories: AFPC, AMNH, MCZC, USNM.