Key to South American genera of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae) without erect setae on elytra; synonymies, transferences, revalidation, and notes on genera with erect setae on elytra Author Monné, Miguel A. 0000-0001-8825-3122 monne@uol.com.br Author Santos-Silva, Antonio 0000-0001-7128-1418 toncriss@uol.com.br Author Monné, Marcela L. 0000-0001-8825-3122 monne@uol.com.br text Zootaxa 2020 2020-10-21 4863 1 1 65 journal article 9030 10.11646/zootaxa.4863.1.1 95a73980-ea3b-47d6-9841-774c62b4d825 1175-5326 4416817 66DCE172-2486-450B-AD2C-2D80F573348E Oxathridia Gilmour, 1963 ( Fig. 141 ) Oxathridia Gilmour, 1963: 7 . Type species— Oxathridia roraimae Gilmour, 1963 (original designation). Diagnosis. Scape not dilated at distal third; prothorax with obtuse protuberance at basal third; prosternal process about as wide as procoxal cavity; mesoventral process wider than mesocoxal cavity; apex of elytra obliquely truncate; ovipositor surpassing the elytral apex. The only specimen known, the female holotype , has only the scape of one antenna, and part of three legs. Number of species currently included: 1. Remarks. As the only knonw specimen of Oxathridia is damaged, lacking most of its antennal segments, it cannot be included in the key by Monné et al. (2020) .