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Arnett, Ross H. Jr. (30 July 2000). American Insects: A Handbook of the Insects of America North of Mexico (Second ed.). CRC Press. ISBN978-0-8493-0212-1.
Krombein, Karl V.; Hurd Jr., Paul D. Jr.; Smith, David R.; Burks, B.D. (1979). Catalog of Hymenoptera in America North of Mexico. Smithsonian Institution Press.
Capinera, John L., ed. (2008). Encyclopedia of Entomology. Springer. ISBN978-1402062421.