Key to South American genera of Acanthocinini (Coleoptera, Cerambycidae Lamiinae) with erect setae on elytral surface Author Monné, Miguel A. 0000-0001-8825-3122 Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, 20940.040 Rio de Janeiro, RJ, Brazil monne@uol.com.br Author Santos-Silva, Antonio 0000-0001-7128-1418 Museu de Zoologia, Universidade de São Paulo, São Paulo, SP, Brazil. & toncriss @ uol. com. br; https: // orcid. org / 0000 - 0001 - 7128 - 1418 toncriss@uol.com.br Author Monné, Marcela L. Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, 20940.040 Rio de Janeiro, RJ, Brazil text Zootaxa 2020 2020-06-09 4789 2 523 553 journal article 21716 10.11646/zootaxa.4789.2.9 2170c1a8-db15-4793-a27b-e59752f7165d 1175-5326 3888664 0099C909-A570-4529-9AEC-9C863E5956E6 Trichonyssodrys Gilmour, 1957 . Trichonyssodrys Gilmour, 1957: 31 . Syn. nov. Type-species — Trichonyssodrys maculata Gilmour, 1957 (original designation). Diagnosis. Prothorax with lateral tubercles in the posterior third; pronotum without tubercles; elytra without centrobasal crest or carina; basal metatarsomere slightly longer than next two together. Number of species currently included: 10. Remark. There is no difference between Pentheochaetes and Trichonyssodrys . The width of the mesoventral process is variable, from two-thirds to half the width of a mesocoxa. Pentheochaetes is feminine gender, and not masculine as indicated in the original description and other included species.