Trigonalys melanoleuca Westwood, 1843:53, sex not indicated.Americâ Meridionali. Bahia (Mus. Brit. et Westw[ood], leg. Turner), Lectotype ♀, examined (BMNH), designated by Carmean & Kimsey, 2007Carmean, D. & L. Kimsey 2007. Phylogenetic revision of the parasitoid wasp family Trigonalidae (Hymenoptera). 23:35-76.:70. - Shuckard, 1841Shuckard, W.E. 1841. On the Aulacidae, a family of Hymenoptera pupivora: and that Trigonalys is one of its components: with the description of a British species of this genus, and incidental remarks upon their collateral affinities. Entomologist 1:115-128. (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); Bodkin, 1918Bodkin, G.E. 1918. Notes on some British Guiana Hymenoptera (exclusive of the Formicidae). The Transactions of the Entomological Society of London 1917:297-321, pls. XXI-XXIII. (distribution); Carmean & Kimsey, 2007Carmean, D. & L. Kimsey 2007. Phylogenetic revision of the parasitoid wasp family Trigonalidae (Hymenoptera). 23:35-76. (distribution).