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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
Cyrtodactylus payacola — GRISMER & QUAH 2019 
DistributionWest Malaysia (Penang)

Type locality: Bukit Panchor State Park, Penang, West Malaysia 05°09.465' N, 100°32.885' E at an elevation of 47 m.  
TypesHolotype: LSUHC 10074, adult male, collected by E. Quah S. H. on 4 September 2011. Paratypes. All paratopotypes were collected in various combinations by M. A. Muin, E. Quah S.H., S. Anuar, C. K. Onn, and L. L. Grismer from the same locality as the holotype. LSUHC 9982 was collected on 6 March 2010; LSUHC 10070 and 10071 were collected on 29 June 2011. 
DiagnosisDiagnosis. Cyrtodactylus payacola sp. nov. is distinguished from all other Sundaland species by having a maximum SVL of 67.7 mm; moderately sized, conical, keeled body tubercles; tubercles occurring on the occiput, forelimbs, hind limbs, and beyond base of tail; 44–51 ventral scales; no transversely enlarged, median subcaudal scales; 18–21 subdigital lamellae on fourth toe; abrupt transition between postfemoral and ventral femoral scales; no femoral pores; 11 or 12 contiguous, pore-bearing precloacal scales; shallow, longitudinal, precloacal groove; a pair of posteromedially elongate, triangular to semilunar-shaped, paravertebral blotches on nape prominently out- lined in light yellow; no wide, dark, ventrolateral stripes on flanks; no white reticulum on top of head; paired, semi- transversely arranged, dark blotches on body.

Comparisons. Cyrtodactylus payacola sp. nov. is readily differentiated from all other Sundaland species of Cyrtodactylus on the basis of color pattern and morphology (see Chan & Norhayati 2010: Table 1). It is separated from C. quadrivirgatus, a species to which it was provisionally ascribed (Grismer 2011), based on having 11 or 12 contiguous, pore-bearing precloacal scales along a shallow, longitudinal precloacal groove as opposed to having 0–5 pore-bearing scales and no groove and a pair of posteromedially elongate, triangular to semilunar-shaped, paravertebral blotches on the nape that are prominently outlined in light yellow as opposed to lacking such markings. It differs from its sister species, C. pantiensis, in having more precloacal pores (11 or 12 versus eight or nine); having fewer subdigital lamellae on the fourth toes (18–21 versus 22 or 23); and having a generally immaculate ground color as opposed to the dense, dark brown speckling seen in C. pantiensis.
The Shah Alam specimen (LSUHC 10076) is more similar to C. payacola sp. nov in all aspects of coloration and morphology than it is to any other species of Cyrtodactylus except for having paired dark, dorsal markings and paired, non-symmetrical, semilunar-shaped, dark blotches on only the upper portion of nape. Although it is a female, there are 12 large, non-pore-bearing scales homologous to those pore-bearing scales in males. 
EtymologyThe specific epithet payacola is derived from the word paya meaning “swamp” in the Malay language and the Latin suffix colo, which means to inhabit or dwell in and is in reference to microhabitat in which this species is found. 
  • GRISMER, L. LEE; & EVAN S. H. QUAH 2019. An updated and annotated checklist of the lizards of Peninsular Malaysia, Singapore, and their adjacent archipelagos. Zootaxa 4545 (2): 230–248 - get paper here
  • Grismer, L. Lee; Perry L. Wood, Jr. and Kelvin K. P. Lim 2012. Cyrtodactylus majulah, a new species of bent-toed gecko (Reptilia: Squamata: Gekkonidae) from Singapore and the Riau Archipelago. The Raffles Bulletin of Zoology 60 (2): 487-499 - get paper here
  • Grismer, Lee; Wood, Perry L., Jr.; Poyarkov, Nikolay A.; Le, Minh D.; Karunarathna, Suranjan; Chomdej, Siriwadee; Suwannapoom, Chatmongkon; Qi, Shuo; Liu, Shuo; Che, Jing; Quah, Evan S.H.; Kraus, Fred; Oliver, Paul M.; Riyanto, Awal; Pauwels, Olivier 2021. Karstic Landscapes Are Foci of Species Diversity in the World’s Third-Largest Vertebrate Genus Cyrtodactylus Gray, 1827 (Reptilia: Squamata; Gekkonidae). Diversity 13 (5): 183 - get paper here
  • HARVEY, MICHAEL B.; KYLE A. O’CONNELL, GABRIEL BARRAZA, AWAL RIYANTO, NIA KURNIAWAN & ERIC N. SMITH 2015. Two new species of Cyrtodactylus (Squamata: Gekkonidae) from the Southern Bukit Barisan Range of Sumatra and an estimation of their phylogeny. Zootaxa 4020 (3): 495–516 - get paper here
  • JOHNSON, CHELSÉA B.; EVAN QUAH, S. H., SHAHRUL ANUAR, M. A. MUIN, PERRY L. WOOD, JR., JESSE L. GRISMER, LEE F. GREER, CHAN KIN ONN, NORHAYATI AHMAD, AARON M. BAUER & L. LEE GRISMER 2012. Phylogeography, geographic variation, and taxonomy of the Bent-toed Gecko Cyrtodactylus quadrivirgatus Taylor, 1962 from Peninsular Malaysia with the description of a new swamp dwelling species. Zootaxa 3406: 39–58 - get paper here
  • RIYANTO, AWAL; L. LEE GRISMER & PERRY L. WOOD, JR. 2015. Cyrtodactylus rosichonariefi sp. nov. (Squamata: Gekkonidae), a new swamp-dwelling bent-toed gecko from Bunguran Island (Great Natuna), Indonesia. Zootaxa 3964 (1): 114–124 [erratum in Zootaxa 3999 (4): 600] - get paper here
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