Trigonalys Gundlachii Cresson, 1865:10, ♂. Holotype ♂, Cuba (Dr. J. Gundlach). - Cresson, 1865Cresson, E.T. 1865. On the Hymenoptera of Cuba. Proceedings of the Entomological Society of Philadelphia 4:200 pp. (distribution); 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); Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution); Portuondo Ferrer & Fernández Triana, 2004Portuondo Ferrer, E. & J.L. Fernández Triana 2004. Biodiversidad del orden Hymenoptera en los macizos montañosos de Cuba oriental. Boletín de la Sociedad Entomológica Aragonesa 35:121-136. (distribution). - As Poecilogonalos gundlachii: - Alayo, 1973Alayo, P.D. 1973. Catálogo de los Himenopteros de Cuba. Instituto Cubano del libro, La Habana. 1-218. (distribution); Zayas, 1982Zayas, F. de 1982. Sección Oligoneoptera - Orden Hymenoptera - Orden Strepsiptera. Editorial Científico-Técnica, Ciudad de la Habana. 1-111. (distribution). - As Taeniogonalos gundlachii: - Carmean & Kimsey, 2007Carmean, D. & L. Kimsey 2007. Phylogenetic revision of the parasitoid wasp family Trigonalidae (Hymenoptera). 23:35-76. (distribution), 67 (comb. nov.); Smith et al., 2012Smith, D.R., D.H. Janzen, W. Hallwachs & M.A. Smith 2012. Hyperparasitoid wasps (Hymenoptera, Trigonalidae) reared from dry forest and rain forest caterpillars of Area de Conservación Guanacaste, Costa Rica. Journal of Hymenoptera Research 29:119-144. (distribution). - As Trigonalis gundlachii: - Portuondo & Fernández, 2003Portuondo F., E. & J.L. Fernández T. 2003. Sistemática de los Himenópteros de Cuba: Estado de conocimiento y perspectivas. Boletín de la Sociedad Entomológica Aragonesa 32:29-36. (distribution).
Trigonalys costalis Cresson, 1867:352, ♂.Mass. (Ent. Soc. Phil.); Townes, 1956Townes, H.K. 1956. The Nearctic species of Trigonalid Wasps. Proceedings of the United States National Museum 106 (No. 3367):295-304.:300, Type ♂ (Philadelphia). Synonymized with Taeniogonalos gundlachii (Cresson, 1865) by Carmean & Kimsey, 2007Carmean, D. & L. Kimsey 2007. Phylogenetic revision of the parasitoid wasp family Trigonalidae (Hymenoptera). 23:35-76.:67. - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution); Smith et al., 2012Smith, D.R., D.H. Janzen, W. Hallwachs & M.A. Smith 2012. Hyperparasitoid wasps (Hymenoptera, Trigonalidae) reared from dry forest and rain forest caterpillars of Area de Conservación Guanacaste, Costa Rica. Journal of Hymenoptera Research 29:119-144.:136 ( listed as synonym of Taeniogonalos gundlachii (Cresson, 1865)). - As Poecilogonalos costalis: - Townes, 1956Townes, H.K. 1956. The Nearctic species of Trigonalid Wasps. Proceedings of the United States National Museum 106 (No. 3367):295-304. (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).
Trigonalis sulcatus Davis, 1897:349, ♂. Holotype ♂, Anglesea, N. J. (leg. Prof. J.B. Smith); Townes, 1956Townes, H.K. 1956. The Nearctic species of Trigonalid Wasps. Proceedings of the United States National Museum 106 (No. 3367):295-304.:300, Type ♂ (Philadelphia). - Smith et al., 2012Smith, D.R., D.H. Janzen, W. Hallwachs & M.A. Smith 2012. Hyperparasitoid wasps (Hymenoptera, Trigonalidae) reared from dry forest and rain forest caterpillars of Area de Conservación Guanacaste, Costa Rica. Journal of Hymenoptera Research 29:119-144.:136 ( listed as synonym of Taeniogonalos gundlachii (Cresson, 1865)). - As Trigonalys sulcata: - As Trigonalys sulcatus: - Townes, 1956Townes, H.K. 1956. The Nearctic species of Trigonalid Wasps. Proceedings of the United States National Museum 106 (No. 3367):295-304.:300 ( listed as synonym of Poecilogonalos costalis (Cresson, 1867)); 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.:1198 ( listed as synonym of Poecilogonalos costalis (Cresson, 1867)).