中国沟胸步甲属分类研究及一新种描述(鞘翅目:步甲科:壶步甲族)

Taxonomy of Holcoderus from China, with description of a new species (Coleoptera:Carabidae:Lebiini)

【目的】沟胸步甲属 Holcoderus 属于鞘翅目(Coleoptera)步甲科(Carabidae)壶步甲族(Lebiini)。本研究旨在对该属在中国分布的各个种进行分类厘定。【方法】基于中国科学院动物研究所的馆藏标本以及欧洲多家博物馆的模式标本,采用形态比较学方法开展研究。【结果】共发现中国沟胸步甲属5种,其中包括新种1种(双毛沟胸步甲 H. bisetus sp. n.,模式产地:云南西双版纳),中国新纪录种3种(雅沟胸步甲 H. gracilis 、绿沟胸步甲 H. smaragdinus 和红腿沟胸步甲 H. aeripennis )。提供了中国所有种类的形态描述及特征图,并编制了分种检索表。【结论】至此,我国所分布的沟胸步甲属物种从此前记录的1种增加至5种。

【Aim】 The genus Holcoderus Chaudoir belongs to the order Coleoptera, family Carabidae, tribe Lebiini. This study aims to revise the taxonomy of every species of the genus in China.【Methods】 Based on the collections of Institute of Zoology, Chinese Academy of Sciences and the types deposited in European museums, specimens were observed by using morphology comparative methods.【Results】 Total five species of the genus Holcoderus are recognized in China, including one new species ( Holcoderus bisetus sp. n., type locality: Xishuangbanna, Yunnan), and three newly recorded species ( H. gracilis, H. smaragdinus and H. aeripennis ). Morphological descriptions, photographs of habitus and aedeagus for each species are provided, and a key to Chinese species is compiled.【Conclusion】 To date, the species number of the genus Holcoderus found in China have increased from one to five.