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Cnemaspis calderana MILTO & BEZMAN-MOSEYKO, 2021

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymCnemaspis calderana MILTO & BEZMAN-MOSEYKO 2021 
DistributionIndonesia (Sumatra)

Type locality: Maninjau caldera, Agam Regency, Sumatera Barat, Sumatra, Indonesia, 600 m a.s.l.  
TypesHolotype. ZISP 31463, adult female, 23 February 2020. 
DiagnosisDiagnosis: Maximum SVL 42.9 mm; 10 supralabi- als; 8–9 infralabials; smooth ventral scales; 28 para- vertebral tubercles; tubercles linearly arranged, pres- ent on flanks; ventrolateral caudal tubercles absent; lateral caudal row present; caudal tubercles not encir- cling tail; 4 postcloacal tubercles; no enlarged femoral or subtibial scales; enlarged submetatarsal scales on 1st toe; 14 subdigital 4th toe lamellae; dorsally with irregular transverse dark blotches and pale vertebral stripe; tail with 12 broad dark transverse bands.

Comparisons. Cnemaspis calderana sp. nov. has numerous diagnostic scale and color pattern charac- ter states that separate it from all other Sumatran species. From all Mentawai Archipelago species group (C. jacobsoni Das, 2005, C. dezwaani Das, 2005, C. modiglianii Das, 2005, C. whittenorum Das, 2005) it differs by a large body size (42.9 vs. 30.5– 33.7) and a large number of supralabials (10 vs. 6–7). Cnemaspis calderana sp. nov. differs from C. jacob- soni, C. modiglianii and C. whittenorum in having paravertebral rows of tubercles and smooth pectoral and abdominal scales, from C. dezwaani, C. modigli- anii and C. whittenorum by a low number of subdig- ital lamellae under the 4th toe (14 vs. 16–19) and in having smooth pectoral and abdominal scales. Cne- maspis calderana sp. nov. differs further from all Su- matra mainland members (C. rajabasa Amarasinghe et al., 2015, C. aceh Iskandar et al., 2017, C. andalas Iskandar et al., 2017, C. minang Iskandar et al., 2017, C. pagai Iskandar et al., 2017 and C. tapanuli Iskan- dar et al., 2017) in having smooth dorsal scales and a low number of subdigital lamellae under the 4th toe (14 vs. 18–34). From C. rajabasa the new species differs also by a large number of paravertebral tuber- cles (28 vs. 20–21), a low number of supralabial and infralabial scales (10 vs. 13–14 and 8 vs. 11–12), in having smooth ventral and subcaudal scales, and in lacking tubercles encircling the tail; from C. aceh by a large body size (42.9 vs. 30.7), in lacking a keeled gular, pectoral, abdominal and subcaudal scales and in having a large number of supralabials (10 vs. 7); from C. andalas by a large number of supralabials and infralabials (10 vs. 6–7 and 8 vs. 7); from C. mi- nang by a large body size (42.9 vs. 31.3), smooth gular scales, a large number of supralabials and infralabials (10 vs. 8 and 8 vs. 7) and in having a pale vertebral stripe; from C. pagai by smooth gular, pectoral, ab- dominal, subcaudal scales and ventral scales of thigh; from C. tapanuli by smooth gular and pectoral scales, and a large number of supralabials and infralabials (10vs.6and8vs.6). 
EtymologyThe specific epithet calderana is a feminine adjective meaning belonging to a vast circus-shaped basin of volcanic origin, in reference to the distribution of this species being restricted to the Maninjau caldera. 
  • Milto, K.D. and O.S. Bezman-Moseyko 2021. Herpetofauna of the Maninjau caldera, West Sumatra, Indonesia, with special account to geckos. Proceedings of the Zoological Institute of the Russian Academy of Science 325(4): 430–446. - get paper here
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