Caron Edilson, Castro Jessica C De, Silva Maycon R Da, Ribeiro-Costa Cibele S
Laboratório de Pesquisa em Coleoptera, Setor Palotina, Universidade Federal do Paraná, Palotina, Paraná, Brazil.; Email:
Laboratório de Pesquisa em Coleoptera, Setor Palotina, Universidade Federal do Paraná, Palotina, Paraná, Brazil.; Email: unknown.
Zootaxa. 2016 Jul 14;4138(1):59-82. doi: 10.11646/zootaxa.4138.1.2.
Xenopygus Bernhauer is one of the most colorful staphylinid beetles and widespread in the Neotropical region. The aim of this study was to test the monophyly of Xenopygus based on adult morphology and to review the current species. Cladistic analysis was performed with six ingroup species, including two new species. Xenopygus is a monophyletic group supported by: antennomere V as wide as long to slightly wider, antennomere VII two times wider than long and superior line of pronotal hypomere developed, continuous on the anterior angle of pronotum. Xenopygus is composed of six species, four previously described and two new species, with the following topology: ((X. analis+(X. bicolor+X. confusus))+(X. cordovensis+(X. sancticamillus, sp. nov.+ X. petilicolis, sp. nov.))). Xenopygus is the sister group to a clade formed by species of Dysanellus and Xanthopygus, corroborating previous phylogenetic studies. The genus, and all its species were redescribed, an identification key was produced and illustration diagnostic plates and distribution maps were also provided.
异臀隐翅虫属（Xenopygus）是最具色彩的隐翅虫之一，广泛分布于新热带区。本研究旨在基于成虫形态检验异臀隐翅虫属的单系性，并对现有物种进行修订。对包括两个新物种在内的六个类群物种进行了分支分析。异臀隐翅虫属是一个单系类群，其支持特征为：触角第五节长宽相等至略宽，触角第七节宽为长的两倍，前胸腹面的上缘发达，在前胸的前角处连续。异臀隐翅虫属由六个物种组成，四个为先前描述的物种，两个为新物种，其系统发育关系如下：((X. analis + (X. bicolor + X. confusus)) + (X. cordovensis + (X. sancticamillus, 新种 + X. petilicolis, 新种)))。异臀隐翅虫属是由 Dysanellus 属和 Xanthopygus 属物种组成的一个分支的姐妹群，这与之前的系统发育研究结果一致。对该属及其所有物种进行了重新描述，编制了鉴定检索表，并提供了诊断图版和分布图。
