Zootaxa 1173: 63–68 (2006) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 1173 Copyright © 2006 Magnolia Press ISSN 1175-5334 (online edition) New South American genus and species of Pteroplatini (Coleoptera, Cerambycidae, Cerambycinae) DILMA SOLANGE NAPP* & UBIRAJARA R. MARTINS** * Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531-980 Curitiba-PR, [email protected] CNPq fellowship. ** Museu de Zoologia, Universidade de São Paulo, Caixa Postal 42494,042918-970 São Paulo-SP, Brazil. CNPq fellowship Abstract A new genus, Acabyara, and a new species, A. aruama, are described from Brazil (Amazonas, Ron- donia) and Colombia (Amazonas). A key to the genera of Pteroplatini is provided. Key words: Cerambycinae, key to genera, Pteroplatini, new genus, South America Resumo. Um novo gênero, Acabyara, e uma nova espécie, A. aruama , são descritos do Brasil (Amazonas, Rondônia) e Colômbia (Amazonas). Chave para os gêneros de Pteroplatini é fornecida. Palavras-chave: América do Sul, Cerambycinae, chave para gêneros, novo gênero, Pteroplatini Introduction Pteroplatini Thomson, 1860 is a small tribe of Neotropical Cerambycinae presently com- prising seven genera (Monné 2005) that can be separated in two groups. One of them, including the genera Cosmoplatus Aurivillius, 1891, Cosmoplatidius Gounelle, 1911, and Deltosoma Thomson, 1864, has the prothorax as wide or almost as wide at base as elytra, carinate antennae, and cylindrical femora; the other, with prothorax much narrower at base than elytra, non-carinate antennae and clavate femora, includes Pteroplatus Buquet, 1840, Thelgetra Thomson, 1864, Aphylax Lacordaire, 1869 and Corynellus Bates, 1885. The new genus described below belongs in the first group. The types are deposited at the Museu Nacional, Universidade Federal do Rio de Jan- eiro, Rio de Janeiro, Brazil (MNRJ), and Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil (MZSP). Accepted by C. Duckett: 28 Feb. 2006; published: 13 Apr. 2006 63.