biostudies-literatureUnknown1125Ampai NTwo new insular rock geckos in the genus <i>Cnemaspis</i> are described from Ko Samui in Surat Thani Province and Ko Similan in Phang-nga Province, southern Thailand, based on a combination of morphological and mitochondrial NADH dehydrogenase subunit 2 (ND2) data. Both new species represent divergent lineages within the <i>Cnemaspissiamensis</i> species group. <i>Cnemaspissamui</i> <b>sp. nov.</b> is distinguished from other species in the group by having eight or nine supralabial and infralabial scales; 5-8 pore-bearing precloacal scales in males, pores rounded; 25-27 paravertebral tubercles, arranged randomly; 22-25 subdigital lamellae under 4^th toe; enlarged median subcaudal scale row present; gular region, abdomen, limbs and subcaudal region yellowish only in males, and uncZooKeys115-158https://www.ebi.ac.uk/biostudies/studies/S-EPMC9836533biostudies-literatureHidden diversity of rock geckos within the <i>Cnemaspissiamensis</i> species group (Gekkonidae, Squamata): genetic and morphological data from southern Thailand reveal two new insular species and verify the phylogenetic affinities of <i>C.chanardi</i> and <i>C.kamolnorranathi</i>.PMC9836533Ampai NStuart BLAowphol AYodthong STermprayoon KWood PLRujirawan AfalseHidden diversity of rock geckos within the <i>Cnemaspissiamensis</i> species group (Gekkonidae, Squamata): genetic and morphological data from southern Thailand reveal two new insular species and verify the phylogenetic affinities of <i>C.chanardi</i> and <i>C.kamolnorranathi</i>.Two new insular rock geckos in the genus <i>Cnemaspis</i> are described from Ko Samui in Surat Thani Province and Ko Similan in Phang-nga Province, southern Thailand, based on a combination of morphological and mitochondrial NADH dehydrogenase subunit 2 (ND2) data. Both new species represent divergent lineages within the <i>Cnemaspissiamensis</i> species group. <i>Cnemaspissamui</i> <b>sp. nov.</b> is distinguished from other species in the group by having eight or nine supralabial and infralabial scales; 5-8 pore-bearing precloacal scales in males, pores rounded; 25-27 paravertebral tubercles, arranged randomly; 22-25 subdigital lamellae under 4^th toe; enlarged median subcaudal scale row present; gular region, abdomen, limbs and subcaudal region yellowish only in males, and unc2022-01-01T00:00:00Z20222026-04-08T12:26:20.904Z2025-04-25T17:10:07.924ZS-EPMC98365333676129010.3897/zookeys.1125.94060