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Cyrtodactylus ayeyarwadyensis BAUER, 2003

IUCN Red List - Cyrtodactylus ayeyarwadyensis - Data Deficient, DD

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common Names 
SynonymCyrtodactylus ayeyarwadyensis BAUER 2003
Cyrtodactylus ayeyarwadyensis— AGARWAL et al. 2018 
DistributionMyanmar (Burma: Rakhine), Bangladesh

Type locality: Khoko Gwe Creek, Rakhine Yoma Elephant Range, Gwa Township, Rakhine State, Myanmar (17°43’48.3’’N, 94°39’02.7’’E)  
TypesHolotype: CAS 226154 
DiagnosisDIAGNOSIS.— Cyrtodactylus ayeyarwadyensis may be distinguished from all congeners on the basis of its possession of short digits, a single series of precloacal pores (10–28) in males only, absence of femoral pores and precloacal groove, 22–24 longitudinal rows of dorsal tubercles; 32–37 ventral scales between ventrolateral folds, subcaudal scalation without enlarged midventral plates, and dorsal pattern of 9–11 (usually 10) transverse rows of rectangular brown blotches from occiput to sacrum, usually bordered posteriorly by white punctations or a narrow white band. Among other species from Myanmar it is most similar to C. khasiensis and a new species from Chin State, described below. All are similar in size and bear a series of dark dorsal markings. Cyrtodactylus ayeyarwadyensis differs from C. khasiensis, however, in having (in some specimens) a greater number of precloacal pores (maximum 28 vs 14), rectangular dorsal blotches (vs a more variegated pattern of alternating irregular light and dark bands, or even stripes; Hora 1926), white dorsal punctuations or lines bordering dorsal blotches (in most cases), and narrow white tail bands (vs subequal light and dark bands in C. khasiensis). It differs from the other new species in both color pattern (rectangular dark markings and white punctuations vs narrow transverse bands) and precloacal pore configuration (strongly angled and recessed into a shallow groove in the Chin State species) [after BAUER 2003].

DEFINITION.— A moderate sized Cyrtodactylus, snout-vent length to 78 mm; body relatively slender, limbs moderately long and digits relatively short; one pair of enlarged postmental scales, in broad contact with one another behind mental; 22–24 rows of keeled, oblong dorsal tubercles; 32–37 ventral scales between ventrolateral folds; no precloacal groove, 10–28 precloacal pores in a single series (or with scattered gaps of one poreless scale) in males only. Six widened subdigital lamellae beneath basal phalanx of 4th toe of pes, 10 narrow lamellae beneath more distal phalanges of same toe (in holotype). Subcaudal scalation without enlarged midventral plates. Dorsal pattern of 9–11 (usually 10) transverse rows of rectangular brown blotches from occiput to sacrum. Posterior border of each row usually marked by white punctations or a narrow white band; tail with alternating brown and white bands. 
EtymologyNamed after the Ayeyarwady (Irrawaddy) River which runs through Myanmar. The range of the species includes parts of the Ayeyarwady delta. 
  • AGARWAL, ISHAN; STEPHEN MAHONY, VARAD B. GIRI, R. CHAITANYA, AARON M. BAUER 2018. Six new Cyrtodactylus (Squamata: Gekkonidae) from northeast India. Zootaxa 4524 (5): 501–535 - get paper here
  • Bauer, A.M. 2003. Descriptions of seven new Cyrtodactylus (Squamata: Gekkonidae) with a key to the species of Myanmar (Burma). Proc. Cal. Acad. Sci. 54: 463-498 - get paper here
  • Mahony, S., M. Ahmed, M. K. Hossain, M. M. Kabir & M. K. Hasan 2009. Cyrtodactylus ayeyarwadyensis Bauer, 2003 (Reptilia: Gekkonidae) in Bangladesh with habitat details of new collection localities and a discussion of morphological variation. Salamandra 45 (4): 245–260 - get paper here
  • Mahony, Stephen; Md. Kamrul Hasan, Md. Mofizul Kabir, Mushfiq Ahmed and Md. Kamal Hossain. 2009. A catalogue of amphibians and reptiles in the collection of Jahangirnagar University, Dhaka, Bangladesh. Hamadryad 34 (1): 80 – 94 - get paper here
  • Rösler, H. & Glaw, F. 2008. A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Malaysia including a literature survey of mensural and meristic data in the genus. Zootaxa 1729: 8–22 - get paper here
  • Sumontha, M., Panitvong, N. & Deein, G. 2010. Cyrtodactylus auribalteatus (Squamata: Gekkonidae), a new cave- dwelling gecko from Phitsanulok Province, Thailand. Zootaxa 2370: 53–64 - get paper here
  • Youmans, Timothy M. & L. Lee Grismer 2006. A new species of Cyrtodactylus (Reptilia: Squamata: Gekkonidae) from the Seribuat Archipelago, West Malaysia. Herpetological Natural History 10 (1): 61-70
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