Siriwut Warut, Edgecombe Gregory D, Sutcharit Chirasak, Tongkerd Piyoros, Panha Somsak
Biological Sciences Program, Faculty of Science, Chulalongkorn University, Bangkok, Thailand; Email:
Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand; Email:
Zootaxa. 2015 Mar 11;3931(1):71-87. doi: 10.11646/zootaxa.3931.1.5.
The first Southeast Asian record of the scolopendrid centipede Digitipes Attems, 1930, has been collected and analyzed based on a new species from Myanmar, males possessing a distomedial process on the ultimate leg femur that is diagnostic of the genus. Digitipes kalewaensis n. sp., described herein, is distinguished from other members of Digitipes by its 2.5 to 2.7 dorsally glabrous antennal articles, an unusually long basal suture on the tooth-plates, absence of a lateral spine on the coxopleural process, and a lack of median and dorso-median spines on the ultimate leg prefemur. Maximum likelihood and Bayesian analyses of two molecular markers (mitochondrial COI and 16S rRNA) supported the proposal of a new species from Myanmar. The phylogenetic tree identifies Digitipes barnabasi from the Western Ghats, India, in a polytomy with members of other genera of Otostigminae (Otostigmus, Ethmostigmus and Rhysida) and a robust Indian-Burmese Digitipes clade in which D. kalewaensis n. sp. is resolved as sister group to a clade composed of most Indian species. Available molecular dates for the diversification of Indian Digitipes are consistent with introduction of the genus into SE Asia when the Indian subcontinent made contact with Myanmar in the early Palaeogene.
基于采自缅甸的一个新物种,对东南亚地区首次记录的地蜈蚣科蜈蚣Digitipes Attems,1930进行了采集和分析,雄性在末对步足股骨上具有一个远中突,这是该属的鉴别特征。本文描述的卡莱瓦Digitipes kalewaensis新种与Digitipes属的其他成员不同,其触角有2.5至2.7节,背面无毛,齿板上的基部缝线异常长,基节突上无侧刺,末对步足股节上无中刺和背中刺。对两个分子标记(线粒体COI和16S rRNA)进行的最大似然法和贝叶斯分析支持了来自缅甸的一个新物种的提议。系统发育树显示,印度西高止山脉的巴纳巴斯Digitipes barnabasi与耳孔蜈蚣亚科其他属(耳孔蜈蚣属、真多足蜈蚣属和瘤蜈蚣属)的成员形成多歧分支,以及一个强大的印度 - 缅甸Digitipes分支,其中卡莱瓦Digitipes kalewaensis新种被确定为与由大多数印度物种组成的分支为姐妹群。印度Digitipes多样化的现有分子数据与该属在古近纪早期印度次大陆与缅甸接触时引入东南亚的情况一致。