Omphale varicolor Ashmead, 1894:168 - 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); Howard, 1897Howard, L.O. 1897. On the Chalcididae of the islands of Grenada, B.W.I. Journal of the Linnean Society 26:129-178. (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). - As Euderus varicolor: - Maldonado & Navarro, 1967Maldonado, J. & Navarro, C.A. 1967. Additions and corrections to Wolcott's 'Insects of Puerto Rico'. Caribbean Journal of Science 7 (1-2):45-64. (distribution); Hansson, 2011Hansson, C. 2011. Catalogue of the Eulophidae in the neotropical region (2009 updated 2011). :1-78. (distribution); Noyes, 2019Noyes, J.S. 2019. Universal Chalcidoidea Database. World Wide Web electronic publication. :. (distribution). - As Omphale variicolor: - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, V. Chalcididae et Proctotrupidae. Sumptibus Guilelmi Engelmann, VII + 598. (distribution).