Howard, L. O., 1885, Descriptions of North American Chalcididae from the collections of the U. S. Department of Agriculture and of Dr. C. V. Riley, with biological notes. (First Paper). Together with a list of the described North American species of the family.

Howard, L. O., 1885, Descriptions of North American Chalcididae from the collections of the U. S. Department of Agriculture and of Dr. C. V. Riley, with biological notes. (First Paper). Together with a list of the described North American species of the family., U S Dep Agr Ent Bull 5, pp. 1-47