Data from: New species of Arthroleptis (Anura: Arthroleptidae) from Ngozi Crater in the Poroto Mountains of southwestern Tanzania

A new species of squeaker frog (Arthroleptis) is described from Ngozi Crater in the Poroto Mountains of southwestern Tanzania. The holotype, and only specimen, was collected 80 years ago but remained undescribed because of past taxonomic confusion relating to large-bodied species of Arthroleptis from eastern Africa. Morphological study, including multivariate analysis of measurement data, indicates that this new species is distinguishable from other species of Arthroleptis, including large-bodied species such as Arthroleptis adolfifriederici, Arthroleptis affinis, Arthroleptis nikeae, Arthroleptis nguruensis, and Arthroleptis tanneri. The new species differs from other described species of Arthroleptis by the combination of its large body size, relatively long toes, and relatively small tympanum. The description of this new species further highlights the biological diversity of the Southern Rift Mountains.

本研究记述了采自坦桑尼亚西南部波洛托山脉恩戈齐火山口的节蛙属（Arthroleptis）1新种。该新种的正模标本（亦是唯一馆藏标本）采集于80年前，但因过往东非节蛙属大体型类群存在分类学混淆问题，长期未被正式发表记述。通过形态学研究（涵盖测量数据的多元统计分析）证实，该新物种可与其他所有节蛙属物种相区分，其中包括阿德氏节蛙（Arthroleptis adolfifriederici）、近缘节蛙（Arthroleptis affinis）、耐克节蛙（Arthroleptis nikeae）、恩古鲁节蛙（Arthroleptis nguruensis）以及坦纳节蛙（Arthroleptis tanneri）等大体型类群。该新物种与其他已正式记述的节蛙属物种的鉴别特征组合为：大体型、相对修长的趾部以及相对小巧的鼓膜。此次新物种的正式发表，进一步凸显了南裂谷山脉的生物多样性。