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A New Leaf Litter Toad of Leptobrachella Smith, 1925(Anura, Megophryidae) from Sichuan Province, China with Supplementary Description of L. oshanensis

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Asian Herpetological Research 2021年第2期12卷 143-166页

作者： Shengchao SHI Yinmeng HOU Zhaobin SONG Jianping JIANG Bin WANG CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization anti Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041China Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065SichuanChina University of Chinese Academy of Sciences Beijing 100049China

A new species of the Asian leaf litter toad genus Leptobrachella is described from Sichuan Province, China. Molecular phylogenetic analyses based on mitochondrial and nuclear gene sequences clustered the new species as an independent clade nested into L. oshanensis species group. The new species could be distinguished from its congeners by a combination of following characters: body size moderate(25.8–32.6 mm in male, 33.7–34.1 mm in female);distinct black spots present on flanks;toes rudimentary webbed, with narrow lateral fringes, dermal ridges under toes interrupted at articulations;ventral belly cream white with variable brown specking;skin on dorsum relatively smooth with fine tiny granules or short ridges;iris copper above, silver bellow;greyish black patches on posterior thigh absent or small;spines on surface of chest absent in male during breeding season;nasals entirely or partially separated from sphenethmoid in male;dorsal surface of tadpoles semitransparent light brown, spots on tail absent, keratodont row formula I: 3+3(2+2)/2+2: I;calls simple, call series basically consist of repeated long calls, at dominant frequency(4831.9 ± 155.8) Hz and call duration(544.5 ± 146.8) ms. In addition, we made supplementary description on L. oshanensis including holotype, variations, tadpoles, skull and bioacoustics. Besides, this paper reports cases of femoral adipose glands in the genus Leptobrachella as first known sexual dimorphism skin glands for males of Megophryidae.

关键词： multiple data new species sympatric distribution taxonomy

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