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Gloydius variegatus REN, HUANG, WU, JIANG & LI, 2024

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common Names 
SynonymGloydius variegatus REN, HUANG, WU, JIANG & LI 2024 
DistributionChina (Xizang)

Type locality: Karuo Town, Karub District, Qamdo Prefecture, Xizang Autonomous Region, China (31.0399° N, 97.2266° E; 3 324 m a.s.l.).  
Reproduction 
TypesHolotype: CIB 121711 (field No. LJT-YT2022022), adult female, collected by Junjie HUANG, Jinlong REN, and Wei WU on 13 August 2022. Paratype: CIB 121712 (field No. LJT-YT2022009), adult male, collected by Jinlong REN, Junjie HUANG, and Wei WU at the same collection site (31.0401° N, 97.2262° E; 3299 m a.s.l.) as the holotype on 12 August 2022. 
DiagnosisDiagnosis: Gloydius variegatus sp. nov. can be differentiated from all congeners based on a combination of the following morphological characteristics: (1) body moderate, total length 484–564 mm; (2) head robust, round, oval in shape; (3) snout blunt, canthus rostralis indistinct; (4) internasal scales rectangular shaped, not truncated anteriorly; (5) dorsal scale rows 21-21-15 or 21-21-17, distinctly keeled throughout except for outermost row; (6) dorsal body scales matte, not glassy, without metallic luster; (7) ventrals 166–167, subcaudals 42–47; (8) pair of distinct blackish brown eye stripes present or barely visible on lateral head; (9) dorsal, lateral head scales inclusive of supralabial scales not spotted; (10) dorsal background coloration ranging from blackish brown or faint yellow; (11) large irregular light brownish black transverse patches or crossbands across dorsal body from neck to tail; (12) ventrolateral lines absent; (13) hemipenis half divided, bilaterally symmetrical, spine area restricted to basal one-third of branch length. (Rren et al. 2024)


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Comment 
EtymologyNamed after Latin variegatus for varied or diverse, reflecting the variable pholidosis, eye stripe, and dorsal color pattern of the species. 
References
  • Ren J. L., Huang J. J., Wu W., Jiang K., Li J. T. 2025. One mountain, two tigers: A new species Gloydius (Serpentes: Viperidae) from the upper Lancang Valley in 26 Xizang, China, with comments on the diagnostic characters and evolution of the G. strauchi species (Bedriaga, 1912) complex. Asian Herpetol Res, 16(1): 1-19 - get paper here
 
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