Primary type information:
Primary type material: lectotype worker (by designation of Francoeur, 1973: 107). Primary type locality: lectotype U.S.A.: Montana, Helena (W.M. Mann). Primary type depository: AMNH.
Secondary type information:
Secondary type material: 11 paralectotype workers, 1 paralectotype queen, 5 paralectotype males. Secondary type locality: same as for lectotype. Secondary type depositories: AMNH, MCZC, USNM.