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Trimerodytes percarinatus (BOULENGER, 1899)

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
SubspeciesSinonatrix percarinata percarinata (BOULENGER 1899)
Sinonatrix percarinata suriki (MAKI 1931) 
Common NamesE: Olive Annulate Keelback, Eastern Water Snake, Olive Keelback
G: Olivfarbene Kielrückennatter
Chinese: “Wu Hua You She” ( 乌 华游蛇 ) 
SynonymTropidonotus percarinatus BOULENGER 1899: 163
Natrix percarinata — MELL 1931
Natrix percarinata — SMITH 1943: 299
Natrix annularis percarinata — BOURRET 1936 (fide SMITH 1943)
Sinonatrix percarinata — ROSSMAN & EBERLE 1977
Sinonatrix percarinata — ZIEGLER 2002: 263
Sinonatrix percarinata — WALLACH et al. 2014: 677
Trimerodytes percarinatus — REN et al. 2019
Trimerodytes percarinatus — MALLIK et al. 2019

Sinonatrix percarinata percarinata (BOULENGER 1899)
Sinonatrix percarinata percarinata ZHAO & JIANG 1986
Sinonatrix percarinata percarinata — NGUYEN et al. 2009
Trimerodytes percarinatus percarinatus — REN et al. 2019

Sinonatrix percarinata suriki (MAKI 1931)
Natrix suriki MAKI 1931
Sinonatrix percarinata suriki — ZHAO & JIANG 1986
Sinonatrix percarinata suriki — NGUYEN et al. 2009
Trimerodytes percarinatus suriki — REN et al. 2019 (by implication) 
DistributionMyanmar (= Burma), Thailand, Vietnam (Hoa Binh, Yen Bai etc.), NE India (Changlang District, Arunachal Pradesh),
S China (Hainan, Chekiang, Jiangxi, Fujian, Guangdong, Guangxi, Kweichow, Sichuan, Hupeh), Taiwan

suriki: Taiwan.

Type locality: Kuatun (= Guadun), Chongan Co., about 270 miles from Foochow, NW Fokien (= Fujian), China.  
TypesHolotype: unknown (fide NGUYEN et al. 2009).
Holotype: NSMT H-2960 [suriki] 
DiagnosisDiagnosis. (1) Body sides usually with 27 – 37 black bands, in Y-shape, rarely with small black spots or uniform dark brown; (2) 18 – 32 maxillary teeth; (3) belly marked with black spots; (4) two supralabials entering orbit; (5) 127 – 153 ventrals (after Rao and Yang, 1998; Vogel et al., 2004; Le et al. 2015) 
CommentBehavior: nocturnal. 
  • Boulenger, GEORGE A. 1899. On a collection of reptiles and batrachians made by Mr. J. D. La Touche in N.W. Fokien, China. Proc. Zool. Soc. London 1899: 159-172 - get paper here
  • Captain, ASHOK and ANUPRITA PATEL 1998. Sinonatrix, a new genus for India. Hamadryad 22 (2): 114-115.
  • Chan-ard, T., Parr, J.W.K. & Nabhitabhata, J. 2015. A field guide to the reptiles of Thailand. Oxford University Press, NY, 352 pp. [see book reviews by Pauwels & Grismer 2015 and Hikida 2015 for corrections] - get paper here
  • Das, I. 2012. A Naturalist's Guide to the Snakes of South-East Asia: Malaysia, Singapore, Thailand, Myanmar, Borneo, Sumatra, Java and Bali. Oxford J, ohn Beaufoy Publishing - get paper here
  • Dowling, H.G., & Jenner, J.V. 1988. Snakes of Burma: checklist of reported species and bibliography. Smithsonian Herp. Inf. Serv. (76): 19 pp. - get paper here
  • Hecht, Vera L.; Cuong T. Pham, Tao T. Nguyen, Truong Q. Nguyen, Michael Bonkowski & Thomas Ziegler 2013. First report on the herpetofauna of Tay Yen Tu Nature Reserve, northeastern Vietnam. Biodiversity Journal 4 (4): 507–552
  • Le, Dzung Trung; Anh Ngoc Dao, Dat Thang Pham, Thomas Ziegler, and Truong Quang Nguyen 2018. New records and an updated list of snakes from Yen Bai Province, Vietnam. Herpetology Notes 11: 101-108 - get paper here
  • Le, Dzung Trung; Anh Van Pham, Cuong The Pham, Son Lan Hung Nguyen, Thomas Ziegler, Truong Quang Nguyen 2015. Review of the Genus Sinonatrix in Vietnam with a New Country Record of Sinonatrix yunnanensis Rao et Yang, 1998. Russ. J. Herpetol. 22 (2): 84-88
  • Mallik AK, Chowdhury S, Bhatt BB, Captain A. 2019. First field report of Trimerodytes percarinatus (Boulenger, 1899) (Reptilia: Squamata: Natricidae) from India with notes on its natural history. Amphibian & Reptile Conservation 13(2) [General Section]: 299–303 (e214) - get paper here
  • Marshall BM, Strine CT. 2019. Exploring snake occurrence records: Spatial biases and marginal gains from accessible social media. PeerJ 7:e8059 - get paper here
  • Mell,R. 1931. List of Chinese snakes. Lingnan Sci. Jour., Canton, 8 [1929]: 199-219.
  • Nguyen, S.V., Ho, C.T. and Nguyen, T.Q. 2009. Herpetofauna of Vietnam. Chimaira, Frankfurt, 768 pp.
  • Nguyen, Truong Quang; Tan Van Nguyen, Cuong The Pham, An Vinh Ong & Thomas Ziegler 2018. New records of snakes (Squamata: Serpentes) from Hoa Binh Province, northwestern Vietnam. Bonn zoological Bulletin 67 (1): 15–24 - get paper here
  • Rao, DING QI & D. T. YANG. 1998. A new species of Sinonatrix (Serpentes: Colubridae) of China with preliminary survey on Sinonatrix. Russ. J. Herpetol. 5 (1): 70-73. - get paper here
  • REN, Jinlong; Kai WANG, Peng GUO, Yingyong WANG, Tao Thien NGUYEN, and Jiatang LI 2019. On the Generic Taxonomy of Opisthotropis balteata (Cope, 1895) (Squamata: Colubridae: Natricinae): Taxonomic Revision of Two Natricine Genera. Asian Herpetological Research 10 (2): 105–128; DOI: 10.16373/j.cnki.ahr.180091 - get paper here
  • Smith, M.A. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. 3 (Serpentes). Taylor and Francis, London. 583 pp.
  • Taylor,E.H. 1965. The serpents of Thailand and adjacent waters. Univ. Kansas Sci. Bull. 45 (9): 609-1096 - get paper here
  • Thinh, Bui Bao; <br />Trinh Thi Hong; <br />Hoang Ngoc Thao; Bui Bao Thien 2018. Initial building the sample sets of amphibians and reptiles in the Hong Duc University (Viet Nam). Постулат. 2018. No12 УДК 597.6 + 598.1 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Zhao, E.M. 2006. The snakes of China [in Chinese]. Hefei, China, Anhui Sience & Technology Publ. House, Vol. I, 372 pp., Vol. II (color plates), 280 pp.
  • Zhao,E. & Adler,K. 1993. Herpetology of China. SSAR, Oxford/Ohio, 1-522
  • Ziegler, T. 2002. Die Amphibien und Reptilien eines Tieflandfeuchtwald-Schutzgebietes in Vietnam. Natur und Tier Verlag (Münster), 342 pp. - get paper here
  • ZIEGLER, THOMAS; RALF HENDRIX, VU NGOC THANH, MARTINA VOGT, BERNHARD FORSTER & DANG NGOC KIEN 2007. The diversity of a snake community in a karst forest ecosystem in the central Truong Son, Vietnam, with an identification key. Zootaxa 1493: 1-40 - get paper here
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