Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
复制标题
新几内亚地蛇 Stegonotus Duméril、Bibron 和 Duméril 属的隐秘和非隐秘多样性，1854 年：四个新物种的描述（有鳞目：蛇蛇科）
DOI：
10.1080/00222933.2017.1391959
复制
发表时间：
2018
影响因子：
0.8
通讯作者：
C. Austin
中科院分区：
文献类型：
--
作者：
Sara Ruane;S. Richards;John D. McVay;Burhan Tjaturadi;Keliopas Krey;C. Austin
摘要新几内亚岛已被确认为生物多样性极大，但许多分类群仍鲜为人知。对于岛上的许多蛇来说，情况尤其如此，因为它们的本性可能很难收集和研究。在这里，我们研究了一个很少被研究的蛇属Stegonotus的系统发育和系统地理结构，重点是新几内亚的物种；到目前为止，Stegonotus从未被用现代系统发育方法研究过。利用来自49个个体的分子数据，代表所描述的10个物种中的8个，并包括所有新几内亚分类群，我们估计了一个多位点系统发育并检查了种群结构，以帮助识别未描述的类群。我们使用相应的博物馆担保标本的形态数据(如果有)，并检查分子数据集中没有包括的分类群的额外标本，以确定推定的类群之间的形态差异。我们找到了四个新种的分子证据，既有形态上明显的，也有神秘的，并在这里描述它们。对这四个种的认识表明，Stegonotus的多样性以前被低估了，也表明该属内可能还有其他未描述的类群。这四个分类群使所描述的物种数量增加了40%，并进一步确认了新几内亚是该属的多样性中心。Www.zoobank.org/urn:lsid:zoobank.org:pub:9E21390E-3FD4-40EB-9442-31BC92A76B4F
ABSTRACT The island of New Guinea has been identified as biologically megadiverse but many taxa are still poorly known. This is especially the case for many of the island’s snakes, which by their very nature can be difficult to collect and study. Here we examine the phylogenetic and phylogeographic structure of a poorly studied snake genus, Stegonotus, focusing on the species of New Guinea; until now, Stegonotus has never been examined using modern phylogenetic methods. Using molecular data from 49 individuals representing eight of the ten described species, and including all New Guinea taxa, we estimate a multilocus phylogeny and examine population structure to help identify undescribed taxa. We use morphological data from the corresponding museum vouchered specimens (where available) and also examine additional specimens for taxa not included in the molecular data set to determine morphological differences among putative taxa. We find molecular evidence for four new species of Stegonotus, both morphologically obvious and cryptic, and describe them herein. The recognition of these four species indicates that Stegonotus diversity has been previously underestimated and also suggests that there are likely additional undescribed taxa within the genus. These four taxa increase the number of described species by 40% and further confirm New Guinea as the centre of diversity for the genus. www.zoobank.org/urn:lsid:zoobank.org:pub:9E21390E-3FD4-40EB-9442-31BC92A76B4F