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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). 
EtymologyThe specific epithet honours senior author’s daughter, Ngo Hoang Bich Ngan, because he was not at home on her fifth birthday, when he collected the type series. 
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 - 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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