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Hemiphyllodactylus kyaiktiyoensis GRISMER, WOOD, QUAH, THURA, OAKS & LIN, 2020

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
Subspecies 
Common NamesE: Kyaiktiyo Mountain Slender Gecko 
SynonymHemiphyllodactylus kyaiktiyoensis GRISMER, WOOD, QUAH, THURA, OAKS & LIN 2020 
DistributionMyanmar (Mon)

Type locality: along a trail leading down the north-west facing flank of the mountain from the Golden Rock Pagoda, Mon State, Myanmar (17.47840°N 97.10042°E WGS; 1057 m in elevation).  
Reproduction 
TypesHolotype. Adult female (LSUHC 14032) collected on 4 November 2018 at 1900 hrs by Evan S. H. Quah, L. Lee Grismer, Perry L. Wood Jr., Myint Kyaw Thura, Jamie R. Oaks, and Aung Lin.
Paratypes. Female paratypes (LSUHC 14030–31, 14033–34) bear the same collection data as the holotype. 
DiagnosisDiagnosis. Hemiphyllodactylus kyaiktiyoensis sp. nov. can be separated from all other species of Hemiphyllo- dactylus by possessing the unique combination of having a maximum SVL of 43.4 mm; 8–10 chin scales; enlarged postmentals; five circumnasal scales; 3–5 intersupranasals (=postrostrals); 7–10 supralabials; eight or nine infral- abials; 12–16 longitudinally arranged dorsal scales at midbody contained within one eye diameter and eight or nine ventral scales; four subdigital lamellae on the first finger and four or five on first toe; no plate-like subcaudal scales; adult females not yellow; a dark postorbital stripe extending to at least base of neck; dorsolateral light-colored spots on trunk; no dark, dorsolateral stripe on trunk; faint, dark, ventrolateral stripe on trunk; no dark-colored pattern on trunk; wide, light-brown, nearly unicolor, vertebral region on trunk; beige, postsacral marking bearing anteriorly projecting arms; and caecum and gonads unpigmented. These characters are scored across all Burmese species in Tables 3 and 6 and from all other species of Hemiphyllodactylus from southern China and western Thailand (clades 3 and 4 in Grismer et al. [2017:Table 3]).

Comparisons. The molecular analyses indicate that Hemiphyllodactylus kyaiktiyoensis sp. nov. is a genetically distinct member of the south lineage and is the sister species to H. pinlaungensis sp. nov. (Fig. 1) from which it bears an uncorrected pairwise sequence divergence of 9.5% (Table 10). Hemiphyllodactylus kyaiktiyoensis sp. nov. differs significantly from H. pinlaungensis sp. nov. in having a lower mean value of CS (9.2 vs 11.2, p = 0.014) and a lower adjusted mean value of SN (1.242 vs 1.363) p = 0.018, respectively; Table 6, Fig. 3). It differs further from H. pinlaungensis sp. nov. by having a significantly different centroid position based on the factor loadings of the PC1–3 (p = 0.002; Fig. 3). This latter metric can not be considered a diagnostic character but serves as a measure of the quantitative difference between these two species in multivariate space. Its differences from H. zwegabinensis sp. nov. are listed above in the comparisons section for that species. 
Comment 
EtymologyThe specific epithet is a toponym referring to the type locality of Kyaiktiyo Mountain, Mon State, Myanmar. 
References
  • GRISMER, L. LEE; PERRY L. JR. WOOD, EVAN S. H. QUAH, MYINT KYAW THURA, JAMIE R. OAKS, AUNG LIN 2020. Four new Burmese species of Hemiphyllodactylus Bleeker (Squamata: Gekkonidae) from distantly related parapatric clades from the Shan Plateau and Salween Basin. Zootaxa 4758 (1): 45–82
 
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