中国浙江发现树蛙属一新种（两栖纲：树蛙科）

依据形态特征比较和分子系统发育分析,将采自浙江丽水的树蛙属物种订为一新种——丽水树蛙Rhacophorus lishuiensis Liu,Wang and Jiang,sp.nov.。新种丽水树蛙主要鉴别特征为:1)体型较小,雄性体长34.2~35.8 mm,雌性体长45.9 mm;2)鼓膜直径大于眼径之半;3)后肢较短,胫跗关节前伸贴体达眼后角;4)背面光滑,无明显疣粒;5)生活时背面绿色,无斑或散有稀疏的浅蓝绿色细点;6)咽喉部白色,虹彩黄色;7)雄性具单咽下内声囊,第一指基部具浅黄色婚垫。依据线粒体基因12S rRNA、tRNAval和16S rRNA共2 038 bp序列以贝叶斯法构建树蛙属41个物种间的系统发育关系,新种丽水树蛙为一个独立的支系,并与绿背树蛙(R.dorsoviridis)支系以高支持率形成姐妹群(后验概率1.00),支长较长。

A New Treefrog Species of the Genus Rhacophorus Found in Zhejiang, China (Anura: Rhacophoridae)

Here we described a new species,Rhacophorus lishuiensis Liu,Wang and Jiang,sp.nov.(Fig.2 and 3).Holotype:WYF11032,adult male,collected from Fengyang Forest Station (Fig.4) in Liandu,Lishui,Zhejiang,China,by LIU Bao-Quan on 8 May 2016 (28°11′51.72″N,119°49′2.28″E,altitude 1 100 m);allotype:WYFl1035,adult female,collected on 2 April 2016;paratypes:2 (WYFl1033 and WYF11034),same date and locality as holotype;other information of allotype and paratypes same as holotype.Measurements are showing in Table 2.The holotype and allotype deposited in Herpetological Museum of Chengdu Institute of Biology,Chinese Academy of Sciences,and two paratypes deposited in Zhejiang Museum of Natural History.The new species distinguished from the congeners by a combination of the following characters:1) small body size,snout-vent length (SVL) 34.2-35.8 mm in males,and 45.9 mm in female;2) diameter of tympanum (TD) greater than half diameter of eye (ED);3) hindlimb relatively short,tibiotarsal articulation reaching the posterior comer of eye when adpressed;4) dorsal surface smooth,without distinct tubercles;5) dorsal surface pure green,or scattered pale bluish green small spots;6) throat white,iris golden yellow;7) males with an internal single subgular vocal sac,and pale yellow nuptial pad on the base of first finger.In addition,based on 2 038 based pairs (bp) of mitochondrial 12S rRNA,tRNAval and 16S rRNA sequences,we constructed phylogenetic relationships using Bayesian inference among 41 species of the genus Rhacophours (Table 1 and Fig.1).The new species,R.lishuiensis formed a distinct lineage,and clustered with the lineage R.dorsoviridis display relatively long branch length,with high support value (Bayesian posterior probability 1.00).