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Cyrtodactylus hontreensis NGO VAN TRI, GRISMER & GRISMER, 2008

IUCN Red List - Cyrtodactylus hontreensis - Least Concern, LC
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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Hon Tre Bent-toed Gecko
Vietnamese: Th|n L|n Chân Ngón Hòn Tre 
SynonymCyrtodactylus hontreensis NGO, GRISMER & GRISMER 2008
Cyrtodactylus hontreensis — NGUYEN et al. 2021
Cyrtodactylus honteensis — RIEDEL et al. 2024 (in error)
Cyrtodactylus hontreensis — AMPAI et al. 2025 
DistributionSW Vietnam (Kien Giang province: Hon Tre Island)

Type locality: Hon Tre Island, Kien Hai District, Kien Giang Biosphere Reserve, Kien Giang province, southwestern Vietnam (09°57.922’N 104°50.678’E), 100 m elevation.  
Reproductionoviparous (manual and phylogenetic imputation, fide Zimin et al. 2022) 
TypesHolotype: UNS 0216, an adult male collected by Ngo Van Tri on 2 September 2006. 
DiagnosisDiagnosis: Cyrtodactylus hontreensis sp. nov. differs from all congeners by the combination of the following characteristics: body slender; SVL 79.7 ± 4.9 mm; occiput without spots or bands; 16 or 17 scales across rostrum; 21–26 scales between eye and nostril; three broad dorsal body bands edged in white between limb insertions; no precloacal groove; seven or eight precloacal pores in males; 2–5 enlarged femoral scales; 40–42 ventral scales between ventrolateral body folds; very low, smooth body tubercles in fourteen irregular longitudinal rows at midbody; 20–24 paravertebral tubercles; 21–22 subdigital lamellae on first toe; 17–19 subdigital lamellae on fourth toe; tail segmented, a shallow middorsal groove present, caudal tubercles; broad dark band at base of tail; enlarged subcaudal scales. 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
EtymologyNamed after the type locality. 
References
  • Ampai N, Rujirawan A, Yodthong S, Termprayoon K, Stuart BL, Aowphol A 2024. A new species of karst-dwelling bent-toed gecko of the Cyrtodactylus intermedius group (Squamata, Gekkonidae) from eastern Thailand and the phylogenetic placement of C. intermedius. ZooKeys 1211: 101-130 - get paper here
  • Ampai, N., Aowphol, A., Yodthong, S., Termprayoon, K., Grismer, L.L. & Rujirawan, A. 2025. Description of a new forest-dwelling bent-toed gecko of the Cyrtodactylus intermedius group (Squamata: Gekkonidae) from the Sakaerat Biosphere Reserve, Nakhon Ratchasima Province, northeastern Thailand. Zootaxa, 5666 (3): 361–388 - get paper here
  • CHHIN, S., NEANG, T., CHAN, S., KONG, K., OU, R., SAMORN, V., ... & GRISMER, L. L. 2024. A new species in the Cyrtodactylus intermedius (Squamata: Gekkonidae) group from an isolated limestone karst formation in southwestern Cambodia. Zootaxa 5474 (1): 1-20
  • 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
  • Geissler, P.; Nazarov, R.; Orlov, N.L.; Böhme, W.; My Phung, T.; Nguyen, T.Q. & Ziegler, T. 2009. A new species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam. Zootaxa 2161: 20–32 - get paper here
  • Grismer, L. L., Wood, P. L., Poyarkov, N. A., Le, M. D., Kraus, F., Agarwal, I., Oliver, P.M., Nguyen, S.N., Nguyen, T.Q., Karunarathna, S., Welton, L.J., Stuart, B.L., Luu, V.Q., Bauer, A.M., O’Connell, K.A., Quah, E.S.H., Chan. K,O., Ziegler, T., N 2021. Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71: 101–154 - get paper here
  • GRISMER, L.L. & JACOB SMITH 2023. Additions to the herpetofauna of Hon Son Island, Rach Gia Bay, Kien Giang Province, southern Vietnam with a discussion of syntopy between the granite cave-adapted Bent-toed Gecko Cyrtodactylus eisenmanae and a new Cyrtodactylus of uncertain taxonomic status. Zootaxa 5346 (3): 307–316 - get paper here
  • Grismer, Lee; Wood, Perry L., Jr.; Poyarkov, Nikolay A.; Le, Minh D.; Karunarathna, Suranjan; Chomdej, Siriwadee; Suwannapoom, Chatmongkon; Qi, Shuo; Liu, Shuo; Che, Jing; Quah, Evan S.H.; Kraus, Fred; Oliver, Paul M.; Riyanto, Awal; Pauwels, Olivier 2021. Karstic Landscapes Are Foci of Species Diversity in the World’s Third-Largest Vertebrate Genus Cyrtodactylus Gray, 1827 (Reptilia: Squamata; Gekkonidae). Diversity 13 (5): 183 - 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
  • 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, L. Lee Grismer & J. L. Grismer 2010. A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) in Phu Quoc National Park, Kien Giang Biosphere Reserve, Southwestern Vietnam. Zootaxa 2604: 37–51 - get paper here
  • Ngo, Van Tri 2011. Cyrtodactylus martini, another new karst-dwelling Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Northwestern Vietnam. Zootaxa 2834: 33–46 - 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
  • Ngo, Van Tri; Grismer, L. Lee; Grismer, J.L. 2008. A new endemic cave dwelling species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) in Kien Giang Biosphere Reserve, Southwestern Vietnam. Zootaxa 1967: 53–62 - get paper here
  • Nguyen AT, Duong TV, Grismer LL, Poyarkov NA 2021. A new granite cave-dwelling Bent-toed Gecko from Vietnam of the Cyrtodactylus irregularis group (Squamata; Gekkonidae) and a discussion on cave ecomorphology. Vertebrate Zoology, 71: 155-174 - get paper here
  • Nguyen, S.V., Ho, C.T. and Nguyen, T.Q. 2009. Herpetofauna of Vietnam. Chimaira, Frankfurt, 768 pp.
  • 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
  • Riedel, J., Eisele, K., Gabelaia, M., Higham, T. E., Wu, J., Do, Q. H., Nguyen, T. Q., Meneses, C. G., Brown, R. M., Ziegler, T., Grismer, L. L., Russell, A. P., & Rödder, D. 2024. Ecologically-related variation of digit morphology in Cyrtodactylus (Gekkota, Squamata) reveals repeated origins of incipient adhesive toepads. Functional Ecology, 00, 1–19 - 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.; ROMAN NAZAROV, NIKOLAI ORLOV, TRUONG QUANG NGUYEN, THANH NGOC VU, KIEN NGOC DANG, TRI HUY DINH, ANDREAS SCHMITZ 2010. A third new Cyrtodactylus (Squamata: Gekkonidae) from Phong Nha-Ke Bang National Park, Truong Son Range, Vietnam. Zootaxa 2413: 20–36 - 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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