Primary type information:
Type-material: holotype worker. Type-locality: U.S.A.: South Dakota, Hill City (T. Ulke?). Type-depository: MSNG.
Type notes:Emery, 1895d: 319, originally gave the type-locality as “Washington D.C. (Pergande)”; however, Smith, 1939c: 179, cited “Hill City, S. Dak.(ota) (Titus Ulke?)”, a change accepted by Francoeur et al., 1985: 382.