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Oligodon bivirgatus QIAN, QI, SHI, LU, JENKINS, MO & LI, 2021

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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Double Striped Kukri Snake
Chinese: 双线小头蛇 (Shuāng Xiàn Xiǎo Tóu Shé) 
SynonymOligodon bivirgatus QIAN, QI, SHI, LU, JENKINS, MO & LI 2021 
DistributionChina (Hainan)

Type locality: China, Hainan, Shangxi Nature Reserve (18.834167° N, 110.130833° E), 319 m elevation  
Reproduction 
TypesHolotype: SYNU 1907027, adult female, collected on 13 July 2019 by Tianyu Qian and Minghong Huang; Paratypes: SYNU 1808001, adult female, collected on 17 August 2018 by Pipeng Li, Tianyu Qian and Minghong Huang from the same valley as the holotype (18.833611° N, 110.130556° E; 317 m a.s.l.). 
DiagnosisDiagnosis: Oligodon bivirgatus sp. nov. can be distinguished from its congeners known to occur in southern China and mainland Southeast Asia by having the following combination of characters: (1) eight maxillary teeth; (2) nasal divided; (3) absence of a loreal; (4) single preocular and two postoculars; (5) seven supralabials, third and fourth touching the orbit, sixth excluded from the lip; (6) seven infralabials, anterior four contacting chin shields; (7) internasals separate from prefrontals; (8) single anterior and two posterior temporals; (9) anal plate divided; (10) 15/15/15 dorsal scale rows; (11) dorsum reddish-brown in life, with two distinct narrow dark stripes, two dorsolateral lines are faintly visible; and (12) ventral surface reddish in life, edge cream with irregular dark blotches. (Qian et al. 2021). 
Comment 
EtymologyThe specific name comes from Latin words "bi-" (double) and "virgatus" (striped), refers to this species has a dorsal color pattern made of two distinct dorsal stripes. 
References
  • QIAN, T., QI, S., SHI, J., LU, Y., JENKINS, R. W., MO, Y., & LI, P. 2021. A new species of Oligodon H. Boie in Fitzinger, 1826 (Squamata: Colubridae) from Hainan Island, China. Zootaxa 4933 (3): 403-421 - get paper here
 
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