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Five genera in the tribe Sparasionini are described and keyed. Electroteleia Brues (Baltic amber), Sceliomorpha Ashmead (Neotropics) and Sparasion Latreille (Nearctic, Palearctic, Oriental, and Afrotropical regions) are redescribed. Listron Musetti and Johnson, new genus is described from Chile with two species, L. politum Musetti and Johnson, new species (type species of the genus), and L. bilaminatum Masner, new species. Mexon Masner and Johnson, new genus, is described from Mexico, with two new species, M. adelphos Masner and Johnson, new species (type species of the genus), and M. consors Masner and Johnson, new species. The synonymy of Aliofreniger Szabó with Sceliomorpha and of Prosparasion Kieffer with Sparasion are confirmed. Transfer of the type species of Prosparasion, P. coeruleumKieffer, 1913 into the genus Sparasion makes it a secondary junior homonym of Sparasion coeruleusKieffer, 1905. The replacement name Sparasion lividus Johnson, Masner, and Musetti is proposed for the junior name to resolve this homonymy. The gender of the name Sparasion is discussed, and we propose that it should be treated as a masculine noun. The authorship of the family-group name Sparasionini is credited to Dahlbom (1858).