Travers Scott L, Richards Stephen J, Broadhead Taylor S, Brown Rafe M
Department of Ecology and Evolutionary Biology; Biodiversity Institute, University of Kansas, Dyche Hall, 1345 Jayhawk Blvd, Lawrence, KS 66045-7561, USA..
Zootaxa. 2018 Jan 9;4370(1):23-44. doi: 10.11646/zootaxa.4370.1.2.
We describe a new species of Cornufer, subgenus Batrachylodes, from high-elevation forests of New Britain Island in the Bismarck Archipelago of Eastern Melanesia. The new species, Cornufer exedrus sp. nov., is a biogeographically disjunct member of the Batrachylodes clade, representing the first record of the subgenus from outside of the Solomon Archipelago. The new species is a small terrestrial form from dense, closed-canopy forests above 1500 meters elevation in the Nakanai Mountains of eastern New Britain. It differs from its closest relatives, the other members of the subgenus Batrachylodes, on the basis of its minute body size, degree of digital disc expansion, reduced subdigital tuberculation, color pattern, and other traits related to its small size. We also provide a description of the new species' simple advertisement call. The diversity of ceratobatrachid frogs of the Bismarck Archipelago is most likely still underestimated despite several recent surveys. Our understanding of evolutionary trends and species boundaries in the subgenus Batrachylodes currently is hampered by lack of genetic samples and call recordings corresponding to voucher specimens of the endemic species of Bougainville Island.
我们描述了一种来自美拉尼西亚东部俾斯麦群岛新不列颠岛高海拔森林的灌树蛙属（Cornufer）、髭蟾树蛙亚属（Batrachylodes）的新物种。新物种髭蟾树蛙（Cornufer exedrus sp. nov.）是髭蟾树蛙分支在生物地理学上的一个隔离成员，代表了该亚属在所罗门群岛以外地区的首次记录。新物种是一种小型陆栖蛙类，来自新不列颠岛东部纳卡奈山脉海拔1500米以上的茂密、树冠封闭的森林。它与其最亲近的亲属，即髭蟾树蛙亚属的其他成员不同，体现在其微小的体型、指端圆盘扩展程度、亚指下瘤减少、体色模式以及其他与其小体型相关的特征上。我们还描述了新物种简单的求偶鸣叫。尽管最近进行了几次调查，但俾斯麦群岛角蟾科蛙类的多样性很可能仍被低估。目前，由于缺乏与布干维尔岛特有物种凭证标本相对应的基因样本和鸣叫记录，我们对髭蟾树蛙亚属的进化趋势和物种界限的理解受到了阻碍。
