Tran Tung Thanh, Pham Anh Van, Le Minh Duc, Nguyen Nam Hai, Ziegler Thomas, Pham Cuong The
Vinh Phuc College, Phuc Yen District, Vinh Phuc Province, Vietnam.
Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, 11416 Hanoi, Vietnam.
Zookeys. 2023 Mar 10;1153:15-35. doi: 10.3897/zookeys.1153.93566. eCollection 2023.
A new species of small tree frog is described from northwestern Vietnam based on morphological differences and molecular divergence. is distinguishable from its congeners and other small rhacophorid species on the basis of a combination of the following characters: size relatively small, SVL 32.2-33.1 mm in males, 37.6-39.3 mm in females; head slightly wider than long; vomerine teeth absent; snout round and long RL/SVL 0.17-0.19 in males, 0.16-0.17 in females; spines on upper eyelid absent; supratympanic fold distinct; tympanum distinct; dorsal skin smooth; throat smooth and venter granular; tibiotarsal projection absent; webbing of fingers rudimentary, toes with moderately developed webbing; dorsum moss-green, with an inverse Y-shaped dark green marking extended from interorbital region to posterior region of dorsum; external vocal sac absent in males; males with a nuptial pad on finger I. In the molecular analyses, the new species has no clear sister taxon and is at least 4.5% divergent from other congeners based on a fragment of the mitochondrial 16S rRNA gene.
基于形态差异和分子分歧，在越南北部描述了一种新的小树蛙物种。它与同属物种及其他小型树蛙科物种的区别在于以下特征的组合：体型相对较小，雄性的体长（SVL）为32.2 - 33.1毫米，雌性为37.6 - 39.3毫米；头部略宽于长；无犁骨齿；吻部圆润且长，雄性的吻长与体长之比（RL/SVL）为0.17 - 0.19，雌性为0.16 - 0.17；上眼睑无棘；鼓膜上褶明显；鼓膜明显；背部皮肤光滑；喉部光滑，腹部有颗粒状；无胫跗关节瘤；指蹼不发达，趾间有适度发达的蹼；背部呈苔藓绿色，有一个倒Y形深绿色斑纹，从眶间区域延伸至背部后部；雄性无外声囊；雄性第一指有婚垫。在分子分析中，基于线粒体16S rRNA基因片段，该新物种没有明确的姐妹分类单元，且与其他同属物种至少有4.5%的分歧。
