Shimizu, A., A. S. Lelej, and V. M. Loktionov. “Revision of the Palaearctic Brood Parasitic Genus Nipponodipogon Ishikawa, 1965 of Spider Wasps (Hymenoptera: Pompilidae: Pepsinae)”. Zootaxa, vol. 3948, no. 3, Apr. 2015, pp. 497–520, doi:10.11646/zootaxa.3948.3.6.