Cnemaspis chanardi GRISMER, SUMONTHA, COTA, GRISMER, WOOD, PAUWELS & KUNYA, 2010
Can you confirm these amateur observations of Cnemaspis chanardi?
|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Chan-ard’s Rock Gecko|
Thai: Djing Djok Niew Yaow Tanya
|Synonym||Cnemaspis chanardi GRISMER, SUMONTHA, COTA, GRISMER, WOOD, PAUWELS & KUNYA 2010|
Gonatodes siamensis SMITH 1930:16
Cnemaspis siamensis SMITH 1935:71
Cnemaspis siamensis — TAYLOR 1963: 740 (part.)
Cnemaspis chanardi — GRISMER et al. 2014: 52
Cnemaspis chanardi — COTA et al. 2022
|Distribution||S Thailand (foothills of the Nakhon Si Thammarat and Sankalakhiri Mountains and lowland areas to the west, extending from the southern terminus of the Isthmus of Kra in Donsak District, Surat Thani Province, southward along the western foothills through Khao Chong and Nayong district, Trang Province to at least the Phuphaphet Cave, Satun Province in the south. It probably continues approximately 45 km further south to the Banjaran Nakawan mountains that form the physiographic barrier between Thailand and Peninsular Malaysia. It extends westward from the foothills through the lowlands to at least Khlong Thom District, Krabi Province. It ranges from near sea level at Khlong Thom to just under 600 m at Khao Chong. Smith (1930) reported specimens from Khao Whip (=Khao Wang Hip), Nakhon Si Thammarat Province but the elevation is unknown. Its presence on Ko Tao Island, Surat Thani Province, approximately 85 km off the coast from Muang District, Chumpon Province, as opposed to the presence of Cnemaspis siamensis which is geographically closer to Ko Tao Island, is consistent with the geological history of this part of Peninsular Thailand. The island chain consisting of Ko Tao and the intervening islands Ko Samui and Ko Phangan, are offshore extensions of the Nakhon Si Thammarat Mountains to which they were connected during the last glacial maximum (Sathiamurthy & Voris 2006) and lie to the east of the Isthmus of Kra. It is likely that C. chanardi also occurs on Ko Samui and Ko Phangan; see also map [Fig. 1] in GRISMER et al. 2010)|
Type locality: at Ban Chong, Chong, Nayong District, Trang Province, Thailand.
|Reproduction||oviparous (not imputed, fide Zimin et al. 2022)|
|Types||Holotype: THNHM 6983, adult male, collected on 22 June 2005.|
|Diagnosis||Diagnosis: Adult males reaching 40.1 mm SVL, adult females reaching 38.7 mm SVL; 7–10 supralabials; 6–8 infralabials; gulars smooth; forearm, subtibials, ventrals, subcaudals, and dorsal tubercles keeled; 20–30 paravertebral tubercles; tubercles on flanks not linearly arranged; ventrolateral caudal tubercles absent; caudal tubercles do not encircle tail; no lateral, caudal tubercles within lateral, caudal furrow; median row of subcaudals keeled, slightly enlarged; 6–8 precloacal, pore-bearing scales in adult males separated medially by non-pore-bearing scales; pores round; one postcloacal tubercle; shield-like subtibials and enlarged, submetatarsals absent; 25–30 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; yellow to white, prescapular crescent present. These differences are summarized across all species in TABLES 1 and 2 in GRISMER et al. 2010, and Grismer et al. 2014 (Table 6).|
|Comment||This species was previously considered as C. siamensis. Cnemaspis chanardi is most similar to C. kamolnorranathi, C. roticanai, C. siamensis, and C. vandeventeri of Peninsular Thailand.|
Distribution: See map in Grismer 2020: 548 (Fig. 1), Grismer et al. 2014: 17 (Fig. 3).
|Etymology||“The specific epithet chanardi, a masculine name in the genitive case, is in reference to Mr. Tanya Chan-ard of the Thailand Natural History Museum, National Science Museum, Bangkok for his extensive contributions to the herpetology of Thailand, his gracious assistance with this project, and for collecting much of the material used in this study” [from GRISMER et al. 2010].|
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