Urogaster nigriceps Ashmead, 1900:284, ♀. 8 ♀♀, St. Vincent; Deans et al., 2003Deans, A.R., Whitfield, J.B. & Janzen, D.H. 2003. Taxonomy and natural history of the Microgastrinae genus Alphomelon Mason (Hymenoptera: Braconidae). Journal of Hymenoptera Research 12 (1):1-41.:30, Holotype, West Indies: St. Vincent (USNM, 6443, leg. H.H. Smith), Lectotype ♀, examined (NHMUK), designated by Fernández et al., 2020Fernández-Triana, J.L., M.R. Shaw, C. Boudreault, M. Beaudin & G.R. Broad 2020. Annotated and illustrated world checklist of Microgastrinae parasitoid wasps (Hymenoptera, Braconidae). ZooKeys 920:1-1089.:69. - Ashmead, 1900Ashmead, W.H. 1900. Report upon the aculeate Hymenoptera of the islands of St. Vincent and Grenada, with additions to the parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Entomological Society of London pt. II:207-367. (distribution). - As Alphomelon nigriceps: - Deans et al., 2003Deans, A.R., Whitfield, J.B. & Janzen, D.H. 2003. Taxonomy and natural history of the Microgastrinae genus Alphomelon Mason (Hymenoptera: Braconidae). Journal of Hymenoptera Research 12 (1):1-41. (distribution); Fernández et al., 2020Fernández-Triana, J.L., M.R. Shaw, C. Boudreault, M. Beaudin & G.R. Broad 2020. Annotated and illustrated world checklist of Microgastrinae parasitoid wasps (Hymenoptera, Braconidae). ZooKeys 920:1-1089. (distribution); Fernández-Triana et al., 2023Fernández-Triana, J.L., E.M. Shimbori, J.B. Whitfield, A.M. Penteado-Dias, S.R. Shaw, C. Boudreault, J. Sones, K. Perez, A. Brown, R. Manjunath, J.M. Burns, P.D.N. Hebert, M.A. Smith, W. Hallwachs & D.H. Janzen 2023. A revision of the parasitoid wasp genus Alphomelon Mason with the description of 30 new species (Hymenoptera, Braconidae). ZooKeys 1175:5-162. (distribution). - As Apanteles nigriceps: - Muesebeck, 1921Muesebeck, C.F.W. 1921. A revision of the North American species of Ichneumon-flies belonging to the genus Apanteles. Proceedings of the United States National Museum 58:483-576. (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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198. (distribution).