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Trimeresurus caudornatus CHEN, DING, VOGEL & SHI, 2020

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Ornamental tailed pit- viper
Chinese: 饰尾竹叶青 (Shì Wěi Zhú Yè Qîng) 
SynonymTrimeresurus caudornatus CHEN, DING, VOGEL & SHI in CHEN et al. 2020
Trimeresurus (Trimeresurus) caudornatus — MIRZA et al. 2023 
DistributionChina (Yunnan)

Type locality: Nabang Town, Yingjiang County, Yunnan Province (24.6973°N, 97.5805° E, and 389 m elevation), China  
Reproduction 
TypesHolotype: ZMNH AR1238, adult male, collected by L. Ding and Z. Chen on 17 September 2018 (Fig. 2A).
Paratype. ZMNH AR1239, adult female, same collecting data as the holotype (Fig. 2B). 
DiagnosisDiagnosis: (1) Head and body generally dark green, postocular stripes absent in both genders, upper labials light green; (2) ventrolateral stripe faint green yellow, present on the first row of DSR in both genders; (3) iris golden yellow in both genders; (4) dorsal tail mostly dark red, lateral and ventral green; an orange red stripe along the ventral part of the tail; (5) DSR 21/22 –21–15 (n=2), VEN 161–163, SC 52–72; (6) Cep 10, first upper labial partially fused to the nasal; (7) hemipenes elongated, bilobed at 6th plate, tips reaching SC 37–38, small spines present posterior to the bifurcation, sulcus spermaticus shallow, visible, divides at the base of the organ.


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CommentT. caudornatus is nested within some former subspecies of T. albolabris.

Distribution: See map in Vogel et al. 2023: 529 (Fig. 5) for localities. 
EtymologyThe specific name of the new species was made up of the Latin word “caud” (tail) and “ornatus” (ornamental), indicating a red stripe on the subcaudal scales. 
References
  • Chandramouli SR, Campbell PD, Vogel G. 2020. A new species of green pit viper of the genus Trimeresurus Lacépède, 1804 (Reptilia: Serpentes: Viperidae) from the Nicobar Archipelago, Indian Ocean. Amphibian & Reptile Conservation 14(3) [Taxonomy Section]: 169–176 (e264) - get paper here
  • CHEN, ZENING; JIANPING YU, GERNOT VOGEL, SHENGCHAO SHI, ZHAOBIN SONG, YEZHONG TANG, JIA YANG, LI DING, CANGSONG CHEN 2020. A new pit viper of the genus Trimeresurus (Lacépède, 1804) (Squamata: Viperidae) from Southwest China. Zootaxa 4768 (1): 112–128 - get paper here
  • 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
 
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