Cerceris isolde Banks, 1947:24, Scullen, 1965Scullen, H.A. 1965. Review of the genus Cerceris in America North of Mexico (Hymenoptera: Sphecidae). Proceedings of the United States National Museum 116:333-547.:402, Type ♂ (Museum of Comparative Zoology, Harvard University, no. 23540); Scullen, 1972Scullen, H.A. 1972. Review of the genus Cerceris Latreille in Mexico and Central America (Hymenoptera: Sphecidae). Smithsonian Contributions to Zoology 110:1-121.:39, Type ♂ (Museum of Comparative Zoology, Harvard, 23540); Ferguson, 1983Ferguson, G.R. 1983. An annotated synonymic list of North American and Caribbean wasps of the genus Cerceris (Hymenoptera: Philanthidae). Journal of the New York Entomological Society 91 (4):466-502.:486, Holotype ♂ (Museum of Comparative Zoology, Cambridge, Massachusetts, No. 23540). - Scullen, 1965Scullen, H.A. 1965. Review of the genus Cerceris in America North of Mexico (Hymenoptera: Sphecidae). Proceedings of the United States National Museum 116:333-547.:401 ( listed as synonym of Cerceris californica californica Cresson, 1865); Scullen, 1972Scullen, H.A. 1972. Review of the genus Cerceris Latreille in Mexico and Central America (Hymenoptera: Sphecidae). Smithsonian Contributions to Zoology 110:1-121.:38 ( listed as synonym of Cerceris californica californica Cresson, 1865); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1731 ( listed as synonym of Cerceris californica Cresson, 1865); Ferguson, 1983Ferguson, G.R. 1983. An annotated synonymic list of North American and Caribbean wasps of the genus Cerceris (Hymenoptera: Philanthidae). Journal of the New York Entomological Society 91 (4):466-502. (distribution).
Cerceris sandiegensis Scullen, 1965:432, ♂♀. Holotype ♀, two miles east of Anza, Riverside Co., Calif., July 14, 1956 (California Academy of Sciences, leg. M. Wasbauer); Ferguson, 1983Ferguson, G.R. 1983. An annotated synonymic list of North American and Caribbean wasps of the genus Cerceris (Hymenoptera: Philanthidae). Journal of the New York Entomological Society 91 (4):466-502.:486, Holotype ♀ (California Academy of Sciences, San Francisco). Synonymized with Cerceris isolde Banks, 1947 by Ferguson, 1983Ferguson, G.R. 1983. An annotated synonymic list of North American and Caribbean wasps of the genus Cerceris (Hymenoptera: Philanthidae). Journal of the New York Entomological Society 91 (4):466-502.:486. - Scullen, 1965Scullen, H.A. 1965. Review of the genus Cerceris in America North of Mexico (Hymenoptera: Sphecidae). Proceedings of the United States National Museum 116:333-547. (distribution).