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Trimeresurus guoi CHEN, SHI, VOGEL & DING, 2021

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Guo’s green pit viper
Chinese: Diān Nán Zhú Yè Qīng (滇南竹叶青) 
SynonymTrimeresurus guoi CHEN, SHI, VOGEL & DING 2021
Trimeresurus albolabris – ZHU et al. 2016
Trimeresurus (Trimeresurus) guoi— MIRZA et al. 2023 
DistributionChina (Yunnan), Vietnam (Lao Cai), Thailand (Loei and Pha Yao) and Myanmar (Mon State)

Type locality: Jiangcheng County, Yunnan Province,China (22.5738°N, 101.6095° E)  
Reproduction 
TypesHolotype: YNJC0012 adult male, a roadkill, collected by Ding Li, on 9 September 2019
Paratypes: (n = 9): CIB 
DiagnosisDiagnosis: (1) Dorsal body jungle-green with faint transverse dark bands on skin, ventral body yellow green. (2) Lateral head jungle-green above lower margin of eyes, and green yellow below, without postocular stripes. (3) Ventrolateral line of male yellow-green, narrow, only present on outermost row of dorsal scales. (4) Iris firebrick-red in both sexes. (5) First supralabial fused with nasal. (6) Head scales feebly keeled; dorsal scale row 23-21-15 (N = 10), feebly keeled except the outermost rows;ventral scale 154–163 in males (N = 6), 158–160 in females (N =3); subcaudal scale 58–72 in males (N = 7), 52–59 in females (N= 3). (7) Hemipenes long, reaching 23rd/32nd subcaudals when unextruded/extruded, papillae relatively weak and sparse. (CHEN et al. 2021). 
CommentDistribution: See map in Vogel et al. 2023: 529 (Fig. 5) for localities. 
EtymologyThe specific name is in honor of Dr. Peng Guo (Sichuan, China), the first researcher on the taxonomy and systematics of the genus Trimeresurus sensu lato through molecular analysis in China. 
References
  • CHEN, Zening; Shengchao SHI, Jun GAO, Gernot VOGEL, Zhaobin SONG, Li DING, Rong DAI 2021. A New Species of Trimeresurus Lacépède, 1804 (Squamata: Viperidae) from Southwestern China, Vietnam, Thailand and Myanmar. Asian Herpetological Research 12 (2): 167－177 - get paper here
  • Mirza ZA, H. T. Lalremsanga, Bhosale H, Gowande G, Patel H, Idiatullina SS, Poyarkov NA 2023. Systematics of Trimeresurus popeiorum Smith, 1937 with a revised molecular phylogeny of Asian pitvipers of the genus Trimeresurus Lacépède, 1804 sensu lato. Evolutionary Systematics 7(1): 91-104 - get paper here
  • VOGEL, GERNOT; TAN VAN NGUYEN, & PATRICK DAVID 2023. A new green pitviper of the Trimeresurus albolabris complex (Reptilia, Serpentes, Viperidae) from central and southern Myanmar. Zootaxa 5357 (4): 515–554 - get paper here
  • Wang K, Lyu ZT, Wang J, Qi S, Che J 2022. Updated Checklist and Zoogeographic Division of the Reptilian Fauna of Yunnan Province, China. Biodiversity Science 30 (4): 21326, 1–31 - get paper here
  • Zhu, Fei; Qin Liu, Jing Che, Liang Zhang, Xin Chen, Fang Yan, Robert Murphy, Cong Guo and Peng Guo 2016. Molecular phylogeography of white-lipped tree viper (Trimeresurus; Viperidae). Zoologica Scripta DOI: 10.1111/zsc.12156 - get paper here
 
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