Hennen Derek A, Means Jackson C, Marek Paul E
Virginia Polytechnic Institute and State University, Department of Entomology, Price Hall, 170 Drillfield Drive, Blacksburg, Virginia, USA Virginia Polytechnic Institute and State University Blacksburg United States of America.
Zookeys. 2022 Apr 15;1096:17-118. doi: 10.3897/zookeys.1096.73485. eCollection 2022.
Although many new species of the millipede genus Chamberlin, 1918 have been known from museum collections for over half a century, a systematic revision has not been undertaken until recently. There are two species groups in the genus: the species group and the species group. In this study, the species group was investigated. Specimens were collected from throughout its distribution in the Appalachian Mountains of the eastern United States and used for a multi-gene molecular phylogeny. The phylogenetic tree recovered and the two species groups as monophyletic, with as its sister group. Seventeen new species were described, bringing the composition of the species group to 24 species, more than tripling its known diversity, and increasing the total number of described species to 78. The genus now has the greatest number of species in the family Xystodesmidae. Museum holdings of were catalogued, and a total of 1,835 records used to produce a distribution map of the species group. Live photographs, illustrations of diagnostic characters, ecological notes, and conservation statuses are given. The species group is restricted to the Appalachian region, unlike the widely-distributed species group (known throughout eastern North America), and has a distinct gap in its distribution in northeastern Tennessee and adjacent northwestern North Carolina. The species group seems to be adapted to mesic microhabitats in middle to high elevation forests in eastern North America. New species are expected to be discovered in the southern Appalachian Mountains.
虽然自1918年以来，多足纲的许多新物种已在博物馆藏品中被发现半个多世纪了，但直到最近才进行系统修订。该属有两个物种组： 物种组和 物种组。在本研究中，对 物种组进行了调查。标本采集于美国东部阿巴拉契亚山脉其整个分布区域，并用于构建多基因分子系统发育树。系统发育树显示 以及这两个物种组为单系群， 为其姐妹群。描述了17个新物种，使 物种组的物种组成增加到24种，已知多样性增加了两倍多，使已描述的 物种总数增加到78种。该属现在是瘤马陆科中物种数量最多的属。对博物馆收藏的 进行了编目，并使用总共1835条记录制作了该物种组的分布图。文中给出了活体照片、诊断特征插图、生态记录和保护状况。 物种组仅限于阿巴拉契亚地区，与广泛分布的 物种组（在整个北美东部都有分布）不同，并且在田纳西州东北部和相邻的北卡罗来纳州西北部的分布上有明显的间断。 物种组似乎适应于北美东部中高海拔森林中的湿润微生境。预计在阿巴拉契亚山脉南部还会发现新物种。
