Primary type information:
Primary type material: lectotype worker (by designation of Francoeur, 1973: 189). Primary type locality: lectotype U.S.A.: South Dakota (T. Pergande) (by restriction of Wheeler, 1913i: 504). Primary type depository: MSNG.
Secondary type information:
Secondary type material: paralectotype workers (number not stated). Secondary type locality: same as for lectotype. Secondary type depository: MSNG.
Other original syntype locality: U.S.A. Connecticut.