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Cyrtodactylus dati NGO VAN TRI, 2013

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Đạt Bent–toed Gecko
Vietnamese: Thằn lằn chân ngón Hoàng Đức Đạt
French: Cyrtodactyle de Dat 
SynonymCyrtodactylus dati NGO VAN TRI 2013
Cyrtodactylus thuongae PHUNG, VAN SCHINGEN, ZIEGLER & NGUYEN 2014 
DistributionVietnam (Binh Phuoc Province), probably in adjacent Cambodia (Mondulkiri)

Type locality: among dry roots beneath the canopy of secondary evergreen forest in Bu Dop State Forest Enterprise, Bu Dop District, Binh Phuoc Province, southern Vietnam (12° 01’252”N , 106° 54’227E) at 100 m elevation.

thuongae (invalid): S Vietnam (Tay Ninh); Type locality: rocky cave from Ba Den Mountain, Thanh Tan Ward, Tay Ninh Town, Tay Ninh Province (11°21'52"N 106°10'27"E), southern Vietnam, at an elevation of 600 m elevation.  
Reproductionoviparous (manual and phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: ITBCZ 2375, adult male collected by Ngo Van Tri at 20:30 on 20 September 2011.Paratypes. The paratypes ITBCZ 2348–51 bear the same data as the holotype. Paratype ITBCZ 2343 was collected by the same collector at the same locality but on 1 January 2011.
Holotype: IEBR A.2013.23, adult male, collected on 14 May 2013 by T.M. Phung; Paratypes. IEBR A.2013.24, adult female, IEBR A.2013.25, adult female, VNMN A.2013.12, adult female, were collected on 16 December 2012; VNMN A.2013.13, adult male, ZFMK 94994–94997, adult females, and ZFMK 94998–94999, subadults, were collected on 14 May 2013 by T.M. Phung, the same collection data as the holotype. [thuongae] 
DiagnosisDiagnosis: Cyrtodactylus dati sp. nov. differs from all other congeners by the following combination of characters: maximum SVL 70.1 mm; original tail relatively short (TL/SVL: 1.03–1.08; n =2); no distinct dark brown blotches on head; nuchal loop broken into dark fragments; irregular dark blotches on the dorsum; original tails bearing 10 dark brown alternating rings; 4–10 intersupranasals; a series of five or six precloacal pores in males medially interrupted by one poreless scale; no precloacal groove; three or four femoral pores on each thigh in males; 4–7 enlarged scales beneath thighs; 17–19 interorbital scales on the frontal bone; 23–26 scales in a straight line between eye and nostril; 42–48 rows of ventral scales between ventrolateral folds; 20–22 irregular, longitudinal rows of keeled tubercles at midbody between the ventrolateral folds; 34–35 paravertebral tubercles between limb insertions; 12–13 subdigital lamellae on first toe; 18–19 subdigital lamellae on fourth toe; and small subcaudal scales.


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CommentSynonymy: Ngo et al. 2022 synonymized C. thuongae with C. dati.

Habitat: tree branches and leaves, dry roots close to dry fallen trees, decayed trees, beneath the canopy, 0.1 m–1.0 m above forest floor.

Abundance: only known from its original description (Meiri et al. 2017).

Abundance (thuongae): only known from its original description (Meiri et al. 2017).

Reference images: see Uetz et al. 2024 for high-resolution reference images for C. thuongae.

RDB speciesID: 13120 [thuongae]

Etymology (thuongae): The species name is dedicated to the wife of the first author, Dr. Thuong Thi Lien Nguyen from University of Food Industry, Ho Chi Minh City, Vietnam, for support of his field research in Vietnam. 
EtymologyThe specific epithet honours Prof. Hoàng Đức Đạt, former Dean of Hue University, who was the first teacher in the graduate program. 
References
  • 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
  • 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
  • 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
  • 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
  • SCHNEIDER, NICOLE; TRUNG MY PHUNG, MINH DUC LE,TRUONG QUANG NGUYEN, & THOMAS ZIEGLER 2014. A new Cyrtodactylus (Squamata: Gekkonidae) from Khanh Hoa Province, southern Vietnam. Zootaxa 3785 (4): 518–532 - get paper here
  • Uetz, P.H.; Patel, M.; Gbadamosi, Z.; Nguyen, A.; Shoope, S. 2024. A Reference Database of Reptile Images. Taxonomy 4: 723–732 - 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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