Chalcis nigricornis Fabricius, 1798:243, sex not indicated.America boreali (leg. v. Rohr); Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:282, Type (sex not discernible) (University of Kiel, Kiel, Germany). - As Conura nigricornis: - Ruíz et al., 2004Ruíz Cancino, E., J.M. Coronado Blanco, S.N. Myartseva & J.F. Luna Salas 2004. Adenda a Chalcidoidea (Hymenoptera). In: Bousquets, J.L., J.J. Morrone, O.Y. Ordóñez & I.V. Fernández (Ed.). Biodiversidad, Taxonomía y Biogeografía de artrópodos de México: Hacia una síntesis de su conocimiento. Volumen IV. 725-734. (distribution); Noyes, 2019Noyes, J.S. 2019. Universal Chalcidoidea Database. World Wide Web electronic publication. :. (distribution). - As Spilochalcis nigricornis: - Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354. (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).
Smiera maculata Walker, 1841:217 - Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:280 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)).
Chalcis bracata Sanborn, 1863:172, Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:282, Type (Boston Society of Natural History). - Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:280 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)); 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.:865 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)).
Smicra bracata coæqualis Cresson, 1872:46, ♂. 2 ♂♂, Massachusetts, Delaware; Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:282, Type (Academy of Natural Sciences of Philadelphia, 1788). - Cresson, 1872Cresson, E.T. 1872. Synopsis of the North American species belonging to the genera Leucospis, Smicra and Chalcis. Transactions of the American Entomological Society 4:29-60. (distribution); Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, V. Chalcididae et Proctotrupidae. Sumptibus Guilelmi Engelmann, VII + 598. (distribution); Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:280 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)); 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.:865 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)).
Smicra carolina Ashmead, 1887:183, Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:282, Type (Academy of Natural Sciences of Philadelphia, 41181). - Ashmead, 1887Ashmead, W.H. 1887. Studies on the North American Chalcididae, with descriptions of new species, chiefly from Florida. Trans. Am. Entomol. Soc. Phil. 14:183-203. (distribution); Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:280 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)); 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.:865 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)).
Diplodontia secunda Girault, 1917:10, sex not indicated.Long Island, New York; Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:282, Type (U. S. National Museum, 20750). - Burks, 1940Burks, B.D. 1940. Revision of the chalcid-flies of the tribe Chalcidini in America north of Mexico. Proceedings of the United States National Museum 88:237-354.:280 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)); 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.:865 ( listed as synonym of Spilochalcis nigricornis (Fabricius, 1798)).