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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: VanDeventer’s Rock Gecko
Thai: Djing Djok Niew Yaow VanDeventer 
SynonymCnemaspis vandeventeri GRISMER, SUMONTHA, COTA, GRISMER, WOOD, PAUWELS & KUNYA 2010
Gonatodes siamensis SMITH 1925:22
Cnemaspis siamensis — SMITH 1935:72
Cnemaspis siamensis — TAYLOR 1963:743
Cnemaspis siamensis (?) — PAUWELS et al. 2000:129
Cnemaspis vandeventeri — GRISMER et al. 2014: 129
Cnemaspis vandeventeri — COTA et al. 2022 
DistributionCW Thailand (west side of the Tenasserim and the contiguous Phuket Mountains along the west coast of central Peninsular Thailand; from the Khlong Naka Wildlife Sanctuary in the north, southward approximately 58 km to Khlong Had Sompen, Ranong

Type locality: Khlong Naka Wildlife Sanctuary (9° 26.0N, 98° 35.0E), Kapur District, Ranong Province; Thailand.  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype: THNHM 8261, adult male. Paratype. THNHM 8260 has the same collection data as the holotype. 
DiagnosisDiagnosis. Adult males reaching 44.7 mm SVL, adult females reaching 40.5 mm SVL; eight or nine supralabials; 7–9 infralabials; gulars, forearm, subtibials, ventrals, subcaudals, and dorsal tubercles keeled; 25–29 paravertebral tubercles; tubercles small, not linearly arranged, absent from lower flanks (Fig. 6); no ventrolateral, caudal tubercles; caudal tubercles do not encircle tail; no tubercles within lateral, caudal furrow; median row of subcaudals keeled, slightly enlarged; four precloacal, pore-bearing scales in males separated medially by non-pore-bearing scales; pores round; 1–3 postcloacal tubercles; shield-like subtibials absent; 24– 29 subdigital lamellae on fourth toe; no dark, longitudinal gular markings or blotches; head not yellow in adult males; no dark patch on shoulder or neck enclosing a white to yellow ocellus; no yellow to white, prescapular crescent or transverse bars on flanks. These differences are summarized across all species in TABLEs 1 and 2 in GRISMER et al. (2010). 
CommentSimilar species: Cnemaspis vandeventeri is most similar to C. chanardi, C. kamolnorranathi, C. roticanai, and C. siamensis of Peninsular Thailand and was considered conspecific with C. chanardi, and C. siamensis by Smith (1925, 1930, 1935) and (Taylor 1963).

Distribution: See map in Grismer 2020: 548 (Fig. 1). 
EtymologyThe specific epithet vandeventeri, a masculine name in the genitive case, is a patronym honoring Mr. Ryan J. VanDeventer of the Department of Biology at La Sierra University, Riverside, California. “Mr. VanDeventer’s passion for, and commitment to the study of biology has been a continual source of enlightenment and inspiration. His heroic efforts to keep La Sierra University’s herpetology laboratory and its occupants up and running smoothly for the last 16 years goes beyond description.” 
  • Ampai N, Rujirawan A, Yodthong S, Termprayoon K, Stuart BL, Wood Jr PL, Aowphol A 2022. Hidden diversity of rock geckos within the Cnemaspis siamensis species group (Gekkonidae, Squamata): genetic and morphological data from southern Thailand reveal two new insular species and verify the phylogenetic affinities of C. chanardi and C. kam ZooKeys 1125: 115–158 - get paper here
  • Ampai N, Wood Jr PL, Stuart BL, Aowphol A 2020. Integrative taxonomy of the rock-dwelling gecko Cnemaspis siamensis complex (Squamata, Gekkonidae) reveals a new species from Nakhon Si Thammarat Province, southern Thailand. ZooKeys 932: 129-159 - get paper here
  • Cota, M., Makchai, S., & Pongcharoen, C. 2022. Updated Catalogue of the Amphibian and Reptile Type Specimens of the Natural History Museum, National Science Museum, Thailand. Thai Specimens 21: 311––5407
  • GRISMER, L. LEE; MONTRI SUMONTHA, MICHAEL COTA, JESSE L. GRISMER, PERRY L. WOOD, JR., OLIVIER S. G. PAUWELS & KIRATI KUNYA 2010. A revision and redescription of the rock gecko Cnemaspis siamensis (Taylor 1925) (Squamata: Gekkonidae) from Peninsular Thailand with descriptions of seven new species. Zootaxa 2576: 1–55 - get paper here
  • GRISMER, L. LEE; PLATON V. YUSHCHENKO, PARINYA PAWANGKHANANT, ROMAN A. NAZAROV, MALI NAIDUANGCHAN, CHATMONGKON SUWANNAPOOM, NIKOLAY A. POYARKOV 2020. A new species of Cnemaspis Strauch (Squamata: Gekkonidae) of the C. siamensis group from Tenasserim Mountains, Thailand. Zootaxa 4852 (5): 547–564; erratum in Zootaxa 4951 (3): 599 (DOI: 10.11646/zootaxa.4951.3.11) - get paper here
  • Grismer, L.L.; PERRY JR L. WOOD, SHAHRUL ANUAR, AWAL RIYANTO, NORHAYATI AHMAD, MOHD A. MUIN, MONTRI SUMONTHA, JESSE L. GRISMER, CHAN KIN ONN, EVAN S. H. QUAH, OLIVIER S. A. PAUWELS 2014. Systematics and natural history of Southeast Asian Rock Geckos (genus Cnemaspis Strauch, 1887) with descriptions of eight new species from Malaysia, Thailand, and Indonesia. Zootaxa 3880 (1): 001–147 - get paper here
  • Nguyen, H.N., Hung, C., Yang, M. et al. 2020. Sympatric competitors have driven the evolution of temporal activity patterns in Cnemaspis geckos in Southeast Asia. Sci Rep 10: 27 - get paper here
  • Rujirawan, A., Yodthong, S., Ampai, N., Termprayoon, K., Aksornneam, A., Stuart, B. L., & Aowphol, A. 2022. A new rock gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand. Zoosystematics and Evolution, 98(2), 345-363 - get paper here
  • WOOD, PERRY JR. L.; EVAN S.H. QUAH, SHAHRUL ANUAR M.S., MOHD ABDUL MUIN 2013. A new species of lowland karst dwelling Cnemaspis Strauch 1887 (Squamata: Gekkonidae) from northwestern Peninsular Malaysia. Zootaxa 3691 (5): 538–558 - 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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