Primary type information:
Primary type material: holotype queen. Primary type locality: U.S.A.: Iowa, Backbone State Park, 13.ix.1940 (W.F. Buren). Primary type depository: USNM.
Secondary type information:
Secondary type material: 6 paratype workers, 7 paratype queens, 1 paratype male. Secondary type locality: same as for holotype. Secondary type depositories: ISUI, LACM, MCZC, USNM.