Ashmeadia insularis Ashmead, 1894:144, Lectotype ♀, examined (USNM, Type Hym. 5-363), designated by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. - Ashmead, 1894Ashmead, W.H. 1894. Report on the Parasitic Cynipidae, part of the Braconidae, the Ichneumonidae, the Proctotrypidae, and part of the Chalcididae. - Part II. Journal of the Linnean Society of London (Zoology) 25:108-188. (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 Rileya insularis: - 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); Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332. (distribution); Sánchez et al., 2016Sánchez-García, J.A., J.M. Coronado-Blanco, E. Ruíz-Cancino, S.N. Myartseva, L. Martínez-Martínez & R. Jarquín-López 2016. Chalcidoidea (Hymenoptera) y otras avispas parasíticas del estado de Oaxaca, México. Entomología mexicana 2:850-854. (distribution); Noyes, 2019Noyes, J.S. 2019. Universal Chalcidoidea Database. World Wide Web electronic publication. :. (distribution).
Rileya americana Girault, 1916:339, Lectotype ♀ (USNM, TypeNo. 20323), designated by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. Synonymized with Rileya insularis (Ashmead, 1894) by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158.
Rileya similaris Gahan, 1918:148, Lectotype ♀, examined (USNM, Type No 21833), designated by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. Synonymized with Rileya insularis (Ashmead, 1894) by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. - 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); González-Hernández, 2004González-Hernández, A. 2004. Actualización del catálogo de autoridades taxonómicas: Hymenoptera-Parasítica. Depto. de Zoología de Invertebrados. Facultad de Ciencias Biológicas, UANL. Base de datos SNIB-Conabio proyecto BE008. México. D.F. :. (distribution).
Rileya opuntiae Gahan, 1936:482, Lectotype ♀, examined (USNM, TypeNo 51448), designated by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. Synonymized with Rileya insularis (Ashmead, 1894) by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. - 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).
Rileya vardyi Subba Rao, 1978:315, Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158, Holotype ♀, examined (BMNH, B.M. 1971-533). Synonymized with Rileya insularis (Ashmead, 1894) by Gates, 2008Gates, M.W. 2008. Species revision and generic systematics of world Rileyinae (Hymenoptera: Eurytomidae). University of California Publications in Entomology 127:1-332.:158. - De Santis, 1981De Santis, L. 1981. Catalogo de los himenopteros calcidoideos de America al Sur de los Estados Unidos. - Primer suplemento. Revista Peruana de Entomologia 24 (1):1-38. (distribution).