Cnemaspis thachanaensis WOOD, GRISMER, AOWPHOL, AGUILAR, COTA, GRISMER, MURDOCH & SITES, 2017
Can you confirm these amateur observations of Cnemaspis thachanaensis?
|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Tha Chana Rock Gecko|
|Synonym||Cnemaspis thachanaensis WOOD, GRISMER, AOWPHOL, AGUILAR, COTA, GRISMER, MURDOCH & SITES 2017|
Cnemaspis kamolnorranathi — GRISMER et al., 2010: 29
Cnemaspis kamolnorranathi — GRISMER et al., 2014: 130
|Distribution||Thailand (Surat Thani)|
Type locality: Tham Khao Sonk hill, Tha Chana District, Surat Thani Province, Thailand (9.549878°N, 99.175544°E; 107 m elevation)
|Reproduction||oviparous (manual imputation, fide Zimin et al. 2022)|
|Types||Holotype: BYU 62544 adult male, collected 30 July 2016, by PLW, LLG, CA, MC, MSG, MLM. Paratopotypes. All paratypes (BYU 62542–62543, ZMKU R 00729–00731) bear the same collection and locality data as the holotype.|
|Diagnosis||Diagnosis: Cnemaspis thachanaensis sp. nov. is distinguished from all other species of Cnemaspis in the siamensis group by the combination of the following morphological and color pattern characteristics: maximum SVL 39 mm; 10 or 11 supralabials; 9–11 infralabials; ventral scales keeled; no precloacal pores in males; 15–19 paravertebral tubercles linearly arranged; tubercles generally present on the lower flanks; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles anteriorly; presence of lateral caudal tubercle row; caudal tubercles not encircling tail; caudal tubercles restricted to a single paravertebral row; subcaudals keeled bearing a single median row of enlarged keeled scales; one or two post cloacal tubercles in males; no enlarged femoral or tibial scales; subtibials keeled; enlarged submetatarsal scale on first toe; 23–25 subdigital fourth toe lamellae; sexually dimorphic for ventral and dorsal coloration; yellow or white bars present on flanks; prescapular marking present; gular region yellowish-orange, dark incomplete lineate markings in males, less prominent in females; abdomen, limbs and subcaudal region whitish (Table 9).|
Comparisons. Cnemaspis thachanaensis sp. nov. is the sister species to a clade containing C. siamensis and C. vandeventeri (Fig. 2). Although we were not able to obtain genetic material for C. kamolnorranathi we compare it here using morphology to demonstrate that the paratype (CUMZ-R 2009,6,24-3, MS101) is conspecific with C. thachanaensis sp. nov. Cnemaspis thachanaensis sp. nov. differs from C. siamensis and C. vandeventeri by having a smaller SVL (39 mm, vs. 39.7 mm and 44.7 mm) and by having a larger maximum SVL from C. kamolnorranathi (39 mm vs. 37.8 mm). C. thachanaensis sp. nov. differs from C. siamensis, C. vandeventeri, and C. kamolnorranathi by; having more supralabial scales (10–11 vs. 8–9, 8–9, 8–9, respectively); having more infralabials (9–11 vs. 6–8, 7–9, and 7–8, respectively); having paravertebral tubercles linearly arranged; having ventrolateral caudal tubercles anteriorly; having caudal tubercles restricted to a single paravertebral row on each side; having a single median row of keeled subcaudal scales; lacking a single enlarged subcaudal scale row; lacking postcloaclal tubercles in males; the presence of an enlarged submetatarsal scale on the 1st toe. Cnemaspis thachanaensis sp. nov. is further differentiated from C. kamolnorranathi by having keeled ventral scales. Cnemaspis thachanaensis sp. nov. differs from C. vandeventeri and C. kamolnorranathi by lacking precloacal pores. We can further differentiate C. thachanaensis sp. nov. from C. vandeventeri by having less paravertebral tubercles (15–19 vs. 25–29). Cnemaspis thachanaensis sp. nov. differs from C. kamolnorranathi by lacking tubercles in the lateral furrow. Cnemaspis thachanaensis sp. nov. is further differentiated the more distantly related species C. huaseesom and
C. punctatonuchalis in the siamensis group by having a smaller maximum SVL (39 mm vs. 43.5 mm and 49.6 mm, respectively); having more supralabials 10,11 vs. 8; having caudal tubercles restricted to a single paravertebral row; having keeled ventral scales; single median row of keeled subcaudals; lacking enlarged median subcaudal scale row; by lacking postcloacal tubercles in males. Cnemaspis thachanaensis sp. nov. differs by having more infralabials 9–11 vs. 7, 8 in C. punctatonuchalis. Cnemaspis thachanaensis sp. nov. differs from C. huaseesom by lacking precloacal pores. From C. huaseesom, C. thachanaensis sp. nov. differs by having ventrolateral caudal tubercles anteriorly and the presence of a lateral caudal tubercle row. Cnemaspis thachanaensis sp. nov.differs from C. punctatonuchalis by having keeled subcaudal scales. Cnemaspis thachanaensis sp. nov. differs from C. huaseesom by having keeled subtibial scales an an enlarged submetatarsal scale on the first toe. From C. punctatonuchalis, C. thachanaensis sp. nov. differs by having less fourth toe lamellae, 24 vs. 29–31. Cnemaspis thachanaensis sp. nov. is differentiated from all other species in the siamensis group based on squamation and color pattern characteristics (Tables 5 and 8).
|Comment||Behavior: diurnal. No specimens were observed at night.|
Habitat: karst tower embedded within a highly disturbed lowland limestone forest. This species may use the vegetation at night for refuge to avoid Cyrtodactylus thirakaputhi which is nocturnal and maybe a potential predator.
Abundance: only known from its original description (Meiri et al. 2017).
|Etymology||The specific epithet thachanaensis is a noun in apposition to the type locality where this species is found.|
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