Smicra arcana Cresson, 1872:44, ♂. Holotype ♂, 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.:314, Holotype ♂ (Academy of Natural Sciences of Philadelphia, 1786). - Howard, 1885Howard, L.O. 1885. Descriptions of North American Chalcididae from the collections of the U. S. Department of Agriculture and of Dr. C. V. Riley. Bulletin of the U. S. Department of Agriculture 5:3-47. (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). - As Spilochalcis arcana: - 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); Burks, 1958Burks, B.D. 1958. Superfamily Chalcidoidea. 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. 62-84. (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).
Smicra encausta Cresson, 1872:46, ♂. Holotype ♂, Colorado; 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.:314, Type ♀ (Academy of Natural Sciences of Philadelphia, 1789). - Howard, 1885Howard, L.O. 1885. Descriptions of North American Chalcididae from the collections of the U. S. Department of Agriculture and of Dr. C. V. Riley. Bulletin of the U. S. Department of Agriculture 5:3-47. (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.:313 ( listed as synonym of Spilochalcis arcana (Cresson, 1872)); 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.:866 ( listed as synonym of Spilochalcis arcana (Cresson, 1872)).