Yige PIAO,Zening CHEN,Yanqing WU,et al.A New Species of the Genus Rhabdophis Fitzinger, 1843 (Squamata: Colubridae) in Southwestern Sichuan, China[J].Asian Herpetological Research(AHR),2020,11(2):95-107.[doi:10.16373/j.cnki.ahr.190068]
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A New Species of the Genus Rhabdophis Fitzinger, 1843 (Squamata: Colubridae) in Southwestern Sichuan, China
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2020 VoI.11 No.2
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A New Species of the Genus Rhabdophis Fitzinger, 1843 (Squamata: Colubridae) in Southwestern Sichuan, China
Yige PIAO12# Zening CHEN13# Yanqing WU4 Shengchao SHI13 Hirohiko TAKEUCHI5 Teppei JONO6 Masaya FUKUDA7 Akira MORI7 Yezhong TANG1 Qin CHEN1* Li DING1*
1 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
4 Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, Jiangsu, China
5 College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 2520880, Japan
6 Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa 9030213, Japan
7 Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Kyoto 6068502, Japan
Rhabdophis chiwen sp. nov. morphology Natricinae phylogenetics taxonomy
The genus Rhabdophis is a group of widely distributed snakes with more than 20 species. Recent field surveys uncovered a species in southwestern China, which has long been considered as R. pentasupralabialis. Combined molecular and morphological analyses revealed it as a new species Rhabdophis chiwen sp. nov. Based on 12 specimens, this new species is distinguished by the following characters: 1) dorsal body saddlebrown, dorsal scales typically with black margins forming spots and stripes, the margin of the outer row forming two faint dorsolateral black cross-bars alongside body; 2) ventral scales 151–159, the outer margin of ventral scales and several lateral rows of dorsal scales forming ventrolateral longitudinal brownish-red coloration, with faint black spots in the middle of ventral scales; 3) a black oblique stripe present below eyes, often with a black spot between the 2nd and 3rd supralabial and a black stripe on the 5th supralabial; 4) eyes dark khaki, pupils black; 5) infralabials usually 7, the first four in contact with anterior chin-shields; 6) temporal scales 1+1; 7) dorsal scales in 15 rows, feebly keeled except the outer 1–2 rows; 8) anal scale divided; subcaudals 45–59; 9) preocular 1 and postoculars 3 (occasionally 2); 10) body medium-sized (snout-vent length: adult males 404–431 mm, adult females 409–476 mm); 11) tail moderate (tail length/total length in adult males 0.205–0.238, in adult females 0.172–0.193). With the discovery of this new species, the total number of species in genus Rhabdophis is 28 with 12th species known to occur in China.


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Last Update: 2020-06-25