Cladistic analysis and taxonomic revision of Caciomorpha Thomson, 1864 (Coleoptera, Cerambycidae, Lamiinae, Anisocerini)

• Ano de defesa: 2022
• Autor(a) principal: López, Kimberly Paola García
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Biblioteca Digitais de Teses e Dissertações da USP
• Palavras-chave em Português: Filogenética; Longhorned beetle; Neotropical; Phylogenetic; Redescrições; Redescriptions; Serra-pau; Sinônimos; Synonyms
• Link de acesso: https://www.teses.usp.br/teses/disponiveis/38/38131/tde-25042022-133144/

A phylogenetic analysis and taxonomic revision of the genus Caciomorpha Thomson, 1864 was performed in order to prove the monophyly of the group, corroborate the validation of its species, provide a taxonomic key to the species of the genus, and to expand the current knowledge of its geographical distribution. To achieve these objectives, a cladistic analysis, with both equal weighting and implied weighting was performed, using parsimony as optimality criterion. After obtaining the results, the genus and its species were redescribed, and a taxonomic key was created. Caciomorpha was recuperated as paraphyletic in relation to the genera arachalastinus Galileo & Martins, 2001, Phacellocera Laporte, 1840 and Chalastinus Bates, 1862, with Caciomorpha buquetii (Guérin-Méneville, 1844) as sister group of them, and all remaining Caciomorpha species. In order to recuperate the monophyly of Caciomorpha, a new genus was proposed, Amazomorpha gen. nov., to include C. buquetii. Additionally, all variability observed in the species was described, and allowed to recognize that C. palliata (White, 1855) and C. susua (Martins & Galileo, 1996) are synonyms, and to describe a new species from Colombia, C. colombiana sp. nov. Distribution maps for the genus and its species were made, showing that all species occur in the Andean region, with C. batesii (Pascoe, 1858) and C. robusta Galileo & Martins, 1998 also occurring in the Amazon region, C. palliata in Mesoamerica and C. plagiata (Bates, 1875) also occurring in the Cerrado and Chaco. The gathering of localities from the examined material allowed to find new records of geographical distribution of the species. This study represents the first phylogenetic analysis for the genus, using novel features such as mouth pieces, wing venation and male and female terminalia. With the results of this work, Caciomorpha is confirmed as a valid genus containing six species. Additionally, it is provided a key to those species, redescriptions, llustrations, and geographical distribution maps for all the species.