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Cyrtodactylus bichnganae NGO VAN TRI & GRISMER, 2010

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Bich Ngan’s Bent-toed Gecko
Vietnamese: Thằn lằn chân ngón Bích Ngân 
SynonymCyrtodactylus bichnganae NGO VAN TRI & GRISMER 2010 
DistributionVietnam (Son La)

Type locality: karst forest near Son La Town, Son La province, northwestern Vietnam (21°21’N 103°54’E), elevation ca. 600 m.  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype: UNS 0473, an adult male collected by Ngo Van Tri, on 8 May 2009.
Paratype.– The paratype UNS 0474, same data as holotype. 
DiagnosisDiagnosis: Cyrtodactylus bichnganae sp. nov. differs from all congeners by the following combination of characters: SVL 95.3–99.9 mm; body, limbs and digits long, slender; original tail long (TL/SVL 1.16); presence of nuchal loop; dorsal pattern consisting of six or seven dark bands on a brown background; nine white rings on tail; pore-bearing precloacal and femoral scales separated; 10 pore-bearing precloacal scales in males separated from nine pore-bearing femoral scales on each side by two poreless scales; 18–19 interorbital scales across the frontal bone; 18–19 scales between eye and nostril; 30–31 rows of ventral scales between ventrolateral folds; 16–18 irregular longitudinal rows of smooth conical tubercles at midbody between lateral folds; 26–27 paravertebral tubercles; 16–20 subdigital lamellae on first toe; 21–22 subdigital lamellae on the fourth toe; no tubercles on tail; subcaudal scales transversely enlarged. 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
References
  • DAVID, PATRICK; TRUONG QUANG NGUYEN, NICOLE SCHNEIDER & THOMAS ZIEGLER 2011. A new species of the genus Cyrtodactylus Gray, 1827 from central Laos (Squamata: Gekkonidae). Zootaxa 2833: 29–40 - get paper here
  • LUU, VINH QUANG; TRUONG QUANG NGUYEN, HUY QUANG DO, THOMAS ZIEGLER, 2011. A new Cyrtodactylus (Squamata: Gekkonidae) from Huong Son limestone forest, Hanoi, northern Vietnam. Zootaxa 3129: 39–50 - get paper here
  • LUU, VINH QUANG; Truong QUang Nguyen, MINH DUC LE, MICHAEL BONKOWSKI, THOMAS ZIEGLER 2016. A new species of karst-dwelling bent-toed gecko (Squamata: Gekkonidae) from Khammouane Province, central Laos. Zootaxa 4079 (1): 087–102 - get paper here
  • LUU, VINH QUANG;THOMAS CALAME, MICHAEL BONKOWSKI, TRUONG QUANG NGUYEN & THOMAS ZIEGLER 2014. A new species of Cyrtodactylus (Squamata: Gekkonidae) from Khammouane Province, Laos. Zootaxa 3760 (1): 054–066 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions 24 (2): 262-273 - get paper here
  • NAZAROV, ROMAN; NIKOLAY A. POYARKOV, NIKOLAI L. ORLOV, TRUNG MY PHUNG, TAO THIEN NGUYEN, DUC MINH HOANG & THOMAS ZIEGLER 2012. Two new cryptic species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam. Zootaxa 3302: 1–24 - get paper here
  • NGO, VAN TRI 2013. Cyrtodactylus dati, a new forest dwelling Bent-toed Gecko (Squamata: Gekkonidae) from southern Vietnam. Zootaxa 3616 (2): 151–164 - get paper here
  • Nguyen, Truong Quang; Anh Van Pham, Hoang Van Tu, Tan Van Nguyen, Thomas Ziegler 2018. New records and an updated list of lizards from Son La Province, Vietnam. Herpetology Notes 11: 209-216 - get paper here
  • Pham, V. A., Nguyen, Q. T., Tran, V. T., Le Duc, M., Nguyen, T. A., Nguyen, K. B. T., ... & Doan, T. N. M. 2023. Threatened Species of Amphibians and Reptiles from Son La Province and Their Conservation Values. VNU Journal of Science: Earth and Environmental Sciences, 39(1) - get paper here
  • PHUNG, TRUNG MY; MONA VAN SCHINGEN,, THOMAS ZIEGLER, & TRUONG QUANG NGUYEN 2014. A third new Cyrtodactylus (Squamata: Gekkonidae) from Ba Den Mountain, Tay Ninh Province, southern Vietnam. Zootaxa 3764 (3): 347–363 - get paper here
  • Tri, Ngo Van and L. Lee Grismer 2010. A new karst dwelling Cyrtodactylus (Squamata: Gekkonidae) from Son La Province, north-western Vietnam. Hamadryad 35 (1): 84 – 95 - get paper here
  • Ziegler, T.; TRUNG MY PHUNG, MINH DUC LE, Truong QUang Nguyen 2013. A new Cyrtodactylus (Squamata: Gekkonidae) from Phu Yen Province, southern Vietnam. Zootaxa 3686 (4): 432–446 - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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