Primary type information:
Primary type material: lectotype worker (by designation of Francoeur, 1973: 141). Primary type locality: lectotype U.S.A.: Illinois, Rockford, 29.viii.1902 (W.M. Wheeler). Primary type depository: MCZC.
Secondary type information:
Secondary type material: paralectotype workers (number not stated). Secondary type locality: same as for lectotype. Secondary type depositories: AFPC, AMNH, MCZC, MSNG, USNM.