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Cyrtodactylus yangbayensis TRI & ONN, 2010

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Yangbay Bent-toed Gecko
Vietnamese: Than lan chan ngon yang bay. 
SynonymCyrtodactylus yangbayensis TRI & ONN 2010 
DistributionS Vietnam (Khanh Hoa)

Type locality: rocky outcrops around Yang Bay waterfall, Dien Khanh district, Khanh Hoa province, Southern Vietnam (approximately 12°11’N, 108°54’E) at 500–600 m elevation.  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: UNS 0476, adult male collected by Ngo Van Tri on 3 June 2009.
Paratypes. The paratypes UNS 0475 and UNS 0477 have the same collection data as the holotype. UNS 0407–0412 were collected by Ngo Van Tri between 19:00 – 22:00 on 20 August 2008 in Hon Ba Nature Reserve (approximately 12o06’N, 108o59’E), Dien Khanh district, Khanh Hoa province, Southern Vietnam at 500–550m elevation. 
DiagnosisDiagnosis: Cyrtodactylus yangbayensis differs from all other congeners by the following combination of characters: mean SVL of 83.5 mm (± 4.7 mm); original tail long (TL/SVL: 1.28); dark brown blotches on head; nuchal loop broken into two dark fragments or V–shaped; dorsal pattern consisting of five to seven irregular rows of narrow, dark brown bands between limb insertions; 6–8 precloacal pores in males; 5–16 enlarged scales beneath thighs; 18–23 interorbital scales on the frontal bone; 26–32 scales in a straight line between eye and nostril; 39–46 rows of ventral scales between ventrolateral folds; 20–23 irregular, longitudinal rows of weakly–keeled, conical tubercles at midbody between the lateral folds; 28–34 paravertebral tubercles between limb insertions; 18–20 subdigital lamellae on first toe; 15–17 subdigital lamellae on fourth toe; 9–10 enlarged scales on heel; 9–11 irregular bands on original tail; median row of enlarged subcaudal scales.


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CommentAbundance: only known from the type locality (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
  • Do, Q.H., Nguyen, H.Q., Nguyen, H.M.V., Le, M.D., Ho, N.A.T., Pham, C.T., Nguyen, T.Q., Ziegler, T. & Ngo, H.T. 2025. Hidden biodiversity on the highest mountain in southern Vietnam: the fourth species of Cyrtodactylus Gray, 1927 (Squamata: Gekkonidae) from Tay Ninh Province. Zootaxa, 5725 (4), 475–495 - get paper here
  • LUU, VINH QUANG; THOMAS CALAME, Truong QUang Nguyen, MICHAEL BONKOWSKI & THOMAS ZIEGLER 2015. A new species of Cyrtodactylus (Squamata: Gekkonidae) from the limestone forest of Khammouane Province, central Laos. Zootaxa 4058 (3): 388–402 - 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
  • NGO, VAN TRI & L. LEE GRISMER 2012. A new endemic species of Cyrtodactylus Gray (Squamata: Gekkonidae) from Tho Chu Island, southwestern Vietnam. Zootaxa 3228: 48–60 - 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 & Onn, Chan Kinn 2010. A new species of Cyrtodactylus Gray, 1826 (Squamata: Gekkonidae) from Khanh Hoa province, Southern Vietnam. Zootaxa 2504: 47–60 - 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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