Female. Compared with one from Milwaukee, Wis., Sept. 27 (S. Graenicher), it differs thus: the coarsely punctured shining clypeus without a distinct median groove; tegulae very dark brown (instead of clear red) ; stigma and nervures black or almost so; third discoidal cell more produced at end; hair on anterior border of hind tarsi conspicuously yellowish; basal hair-band of second tergite very broad; the abdominal band clear white. Anterior wing 7 mm. long.