Discoelius pulchellus Saussure, 1856:127, ♂♀.Le Mexique, la Jamaique, etc. (Musée de Londres); Bequaert, 1928Bequaert, J.C. 1928. A study of certain types of diplopterous wasps in the collection of the British Museum. The Annals and Magazine of Natural History ser. 10: v. 2 (7):138-176.:158, Holotype ♀ (British Museum). - Saussure, 1854-1856Saussure, H. de 1854-1856. Études sur la famille des Vespides 3: Monographie des Guêpes Sociales ou de la tribu des Vespiens. V. Masson, Paris & J. Kessmann, Genève, 352 pp., 16 pls. (distribution); Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, IX. Vespidae (Diploptera). Guilelmi Engelmann, 181. (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); Zavattari, 1912Zavattari, E. 1912. Materialien für eine Monographie der Neotropischen Eumeniden. Archiv für Naturgeschichte 78:1-272. (distribution). - As Pachymenes pulchellus: - Bequaert, 1928Bequaert, J.C. 1928. A study of certain types of diplopterous wasps in the collection of the British Museum. The Annals and Magazine of Natural History ser. 10: v. 2 (7):138-176. (distribution), 158 (comb. nov.).