Dissomphalus nigrescens Evans, 1954:308, ♂. Holotype ♂, Denison, Texas, 15 June 1938 (USNM, no. 62278, leg. Christenson). Synonymized with Dissomphalus altivolans Evans, 1954 by Azevedo, 1999Azevedo, C.O. 1999. Revision of the neotropical Dissomphalus Ashmead, 1893 (Hymenoptera, Bethylidae) with median tergal processes. Arquivos de Zoologia (São Paulo) 35 (4):301-394.:357. - Evans, 1954Evans, H.E. 1954. The North American species of Dissomphalus. Proceedings of the Entomological Society of Washington 56 (6):288-309. (distribution); Krombein, 1958Krombein, K.V. 1958. Superfamily Bethyloidea. In: Krombein, K.V. (Ed.). Hymenoptera of America North of Mexico - Synoptic Catalog. Washington: U.S. Department of Agriculture. Agriculture Monograph No. 2. First Supplement, 305 pp. 94-100. (distribution); Evans, 1962Evans, H.E. 1962. Further studies on the genus Dissomphalus in the United States, Mexico, and the Greater Antilles. Proceedings of the Entomological Society of Washington 64:65-78. (distribution); Evans, 1964Evans, H.E. 1964. A synopsis of the american Bethylidae (Hymenoptera, Aculeata). Bulletin of the Museum of Comparative Zoology 132 (1):1-222. (distribution); 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. (distribution).