A new species of the Amolops monticola group (Anura: Ranidae) from southwestern Yunnan, China
A new species of the Amolops monticola group (Anura: Ranidae) from southwestern Yunnan, China
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中国云南西南部的蒙蒂科拉蝽群一新种（无尾目：蛙科）
DOI：
10.11646/zootaxa.4577.3.8
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发表时间：
2019-04-08
期刊：
影响因子：
0.9
通讯作者：
Yang, Junxing
中科院分区：
文献类型：
--
作者：
Yu, Guohua;Wu, Zhengjun;Yang, Junxing
本文描述了采自云南西南部的一新种--勐定湍蛙（Amolops mengdingensis sp. nov.）。它属于山地湍蛙种组，与阿浩湍蛙和原塔湍蛙在亲缘关系上聚在一起，但这三个种之间的关系尚未得到解决。新种与A. akhaorum为4.7%，与A. archotaphus的16 SrRNA序列为5.2%。该新种的主要特征是：背外侧褶明显，头侧深褐色，上唇有一条白色条纹，延伸至腋部，背表面光滑，但背外侧褶后部和气孔上方有白色小刺，头顶部和背侧绿色，有黑色斑点，腹侧深褐色，腹侧褐色，无任何绿色着色; SVL雄性36.9-40.2 mm，雌性64.3 mm;雄性有两个外喉下声囊;犁骨齿在两个斜脊中，相隔一小段距离;松果体缺失;吻部长于眼睛直径;内间隙宽于眶间隙;鼓室明显，小于眼睛直径的一半;所有指尖扩张;两个掌结节;外跖骨结节缺失;胫跗关节超过吻端;接近完美的腹部;背侧的肢灰棕色，后肢上有清楚的深棕色条纹;和天鹅绒般的婚垫。
We describe the new species Amolops mengdingensis sp. nov. from southwestern Yunnan, China. It belongs to the Amolops monticola species group and phylogenetically clusters together with Amolops akhaorum and Amolops archotaphus with strong support, although the relationships between these three species are not resolved. Distance between the new species and A. akhaorum is 4.7% and distance between the new species and A. archotaphus is 5.2% for 16S rRNA sequences. The new species is characterized by the following characters: distinct dorsolateral folds; side of the head dark brown with a white upper lip stripe extending to the axilla; dorsal surface smooth, except white spinules on posterior part of dorsolateral folds and above vent; top of head and dorsum green with dark spots in life; loreal region dark brown and flanks brown without any coloration of green; SVL 36.9-40.2 mm in males and 64.3 mm in female; two external subgular vocal sacs in males; vomerine teeth in two oblique ridges, separated by a small distance; pineal body absent; snout longer than eye diameter; internarial space broader than interorbital space; tympanum distinct, smaller than half of eye diameter; all fingertips expanded; two palmar tubercles; outer metatarsal tubercle absent; tibiotarsal articulation reaching beyond snout tip; near immaculate venter; limbs dorsally grayish brown with clear dark brown bars on hindlimbs; and velvety nuptial pads.