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王聿凡,刘宝权,蒋珂,金伟,许济南,吴丞昊.2017.中国浙江省发现异角蟾属一新种(两栖纲:角蟾科).动物学杂志,52(1):19-29.
中国浙江省发现异角蟾属一新种(两栖纲:角蟾科)
A New Species of the Horn Toad of the Genus Xenophrys from Zhejiang, China (Amphibia: Megophryidae)
投稿时间:2016-09-16  修订日期:2017-01-03
DOI:10.13859/j.cjz.201701003
中文关键词:  丽水异角蟾  新种  浙江省
英文关键词:Xenophrys lishuiensis Wang, Liu and Jiang, sp. nov.  New species  Zhejiang
基金项目:国家林业局第二次全国陆生野生动物资源调查项目(林护发[2011]111号),国家科技基础性工作专项(No. 2011FY120200),环境保护部南京环境科学研究所基金项目;
作者单位E-mail
王聿凡 浙江省森林资源监测中心 杭州 310020 282350057@qq.com 
刘宝权 浙江省森林资源监测中心 杭州 310020  
蒋珂 中国科学院昆明动物研究所  
金伟 浙江省森林资源监测中心 杭州 310020  
许济南 浙江省森林资源监测中心 杭州 310020  
吴丞昊 浙江省森林资源监测中心 杭州 310020  
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中文摘要:
      根据形态特征比较,浙江丽水所采集的异角蟾标本应属一新种——丽水异角蟾Xenophrys lishuiensis Wang, Liu & Jiang, sp. nov.。正模标本:WYF00164,雄性成体,2016年5月20日采于浙江省丽水市莲都区葑垟林场附近(28°11′51.72″N,119°49′2.28″E,海拔1 100 m);配模标本:WYF00169,雌性成体;副模标本:12♂♂(WYF00165 ~ WYF00168,WYF00171 ~ WYF00178),2♀♀(WYF00170和WYF11011),均与正模同时、同地采集。正模和配模标本,以及8号副模标本(WYF00165 ~ WYF00168,WYF00171 ~ WYF00173,WYF11011)保存于中国科学院成都生物研究所两栖爬行动物标本馆,其余6号副模标本(WYF00170,WYF00174 ~ WYF00178)保存于浙江自然博物馆。丽水异角蟾主要鉴别特征为:1)体型小,雄性体长30.7 ~ 34.7 mm,雌性体长36.9 ~ 40.4 mm;2)头长略大于头宽;3)无犁骨棱,无犁骨齿;4)舌游离端无缺刻;5)掌突2个;6)胫长不及体长之半;7)趾间无蹼,趾侧无缘膜;8)背部具“X”形斑块,或“X”形斑中间断开,色斑粗,边缘清晰且镶浅色边;9)头背三角形斑与体背斑块不相连;10)雄性肩部具不显著的浅色半圆斑;11)雄性第一、二指背面具婚垫和极小而密集的婚刺,第二指婚刺较少。依据线粒体基因16S rRNA共397 bp序列以贝叶斯法构建异角蟾属14个物种间的系统发育关系。包括新种丽水异角蟾在内的10个异角蟾属物种,以高支持率(后验概率98%)形成一个单系(支系B),其中,该种3个个体以高支持率(后验概率100%)形成一个单独的支系,与其近缘种淡肩异角蟾(X. boettgeri)之间的遗传距离为3.9%,大于同属部分物种间遗传距离。
英文摘要:
      Here we reported a new species, Xenophrys lishuiensis Wang, Liu and Jiang, sp. nov. (Fig. 1 and 2). Holotype: WYF00164, adult male, collected by WANG Yu-Fan on 20 May 2016 from Fengyang Forest Station and adjacent area in Liandu, Lishui, Zhejiang, China (28°11′51.72″N, 119°49′2.28″E, altitude 1 100 m); allotype: WYF00169, adult female, collected by WANG Yu-Fan from the locality in the same date as holotype; paratypes: 12♂♂ (WYF00165﹣WYF00168, WYF00171﹣WYF00178), 2♀♀ (WYF00170 and WYF11011), collected in the same date and same locality as holotype, by WANG Yu-Fan. The holotype, allotype and eight of the paratypes (WYF00165﹣WYF00168, WYF00171﹣WYF00173, WYF11011) were deposited in Herpetological Museum of Chengdu Institute of Biology, Chinese Academy of Sciences; the remaining six paratypes (WYF00170, WYF00174﹣WYF00178) deposited in Zhejiang Museum of Natural History. The new species distinguished by a combination of the following characters: 1) small body size, snout vent length (SVL) 30.7﹣34.7 mm in males, 36.9﹣40.4 mm in females; 2) head length larger than head width; 3) vomerine ridge and vomerine teeth absent; 4) tongue not notched behind; 5) two metacarpal tubercles present; 6) tibia length less than half snout-vent length; 7) no web and lateral fringe in toes; 8) a “X” shaped botch on dorsal body, or divided medially, the botch thick, the margin distinct and edged with light color; 9) the triangle botch on dorsal head not touched with the botch on dorsal body; 10) males with indistinct semicircular light-colored botch on shoulder; 11) males with nuptial pad on the first and second fingers, covered by dense and small nuptial spines, relatively less on the second finger (Table 2 and 3, Fig. 1 and 2). In addition, based on 397 based pairs (bp) of mitochondrial 16S rRNA sequences, we constructed phylogenetic relationships using Bayesian inference among 14 species of the genus Xenophrys (Table 1 and Fig. 3). The new species formed a monophyletic group (Clade B) with high support value (Bayesian posterior probability 98%), three of which formed a distinct lineage with high support value (Bayesian posterior probability 100%), there possesses a 3.9% genetic distance between X. lishuiensis and its close relative X. boettgeri, which is greater than the one between some other species in the Genus of Xenophrys (Table 4).
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