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一新种哨蛙（squeaker frog），隶属于节蛙属（Arthroleptis）。该物种的正模标本（亦为唯一已知标本）于80年前采集完成，但因此前东非节蛙属大体型类群存在分类学混淆问题，该标本始终未被正式记述。本研究通过形态学研究，结合测量数据的多变量分析，证实该新种可与其他节蛙属物种相区分，其中包括Arthroleptis adolfifriederici、Arthroleptis affinis、Arthroleptis nikeae、Arthroleptis nguruensis及Arthroleptis tanneri等大型类群。该新种凭借大体型、相对修长的趾部以及相对偏小的鼓膜这一特征组合，区别于其他已正式记述的节蛙属物种。该新种的正式记述进一步凸显了南裂谷山脉的生物多样性。