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Cyrtodactylus linnwayensis GRISMER, WOOD JR, THURA, ZIN, QUAH, MURDOCH, GRISMER, LIN, KYAW & LWIN, 2017

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Linn-Way bent-toed gecko 
SynonymCyrtodactylus linnwayensis GRISMER, WOOD JR, THURA, ZIN, QUAH, MURDOCH, GRISMER, LIN, KYAW & LWIN 2017: 24 
DistributionMyanmar (Shan State)

Type locality: Yum Twing Gyi Cave, Linn-Way Village, 12.7 km north-east of Ywangan, Taunggyi District, Shan State, Myanmar (N21°12.964, E96°33.288; 1130 m in elevation).  
TypesHolotype: LSUHC 12983, Adult male collected on 15 October 2016 at 1500 h by Evan S. H. Quah, L. Lee Grismer, Perry L. Wood, Jr., Myint Kyaw Thura, Thaw Zin, Matthew L. Murdoch and Htet Kyaw. Paratypes: Adult males LSUHC 12984 and BYU 52214 and adult female LUSHC 12986 bear the same collection data as the holotype. Adult male LSUHC 12980, subadult male BYU 52213 and juvenile male LSUHC 12981 bear the same collection data as the holotype except they were collected from an adjacent cave (Lay Htwat Cave) 20 m away between 1800 and 2000 h. Adult male and female LSUHC 12971–72, respectively, and juvenile males LSUHC 12970 and 19273 were collected on 14 October 2016 between 1500 and 2000 h by Myint Kyaw Thura, Evan S. H. Quah, L. Lee Grismer, Perry L. Wood, Jr., Thaw Zin, Matthew L. Murdoch, Marta S. Grismer and Htet Kyaw from the Yae Htwat Cave, Linn-Way Village, 13.3 km north-east of Ywangan, Taunggyi District, Shan State, Myanmar (N21°13.675, E96°33.403; 1132 m in elevation) and 1 km north of Yum Twing Gyi Cave. 
DiagnosisDiagnosis: Cyrtodactylus linnwayensis sp. nov. differs from all congeners by having the unique combination of 7–9 supralabials; 6–8 infralabials; 25–33 paravertebral tubercles; 13–18 longitudinal rows of body tubercles; 34–42 ventral scales; relatively long digits with 8–10 expanded fourth toe subdigital lamellae proximal to the digital inflection, 12–14 unmodified distal subdigital lamellae and 21–23 total subdigital lamellae; low, weakly keeled, dorsal body tubercles; tubercles not extending beyond base of tail; enlarged femoral and precloacal scales not continuous; 24–32 enlarged femoral scales; enlarged femoral scales nearly equal in size; 10–22 femoral pores in males not continuous with pore-bearing precloacal scales; 9–12 enlarged, precloacal scales; 6–10 precloacal pores in males; four rows of enlarged post- precloacal scales; transverse subcaudal scales twice as wide as long midway down the tail and not extending onto the lateral margins of the tail; top of head bearing dark blotches and light-coloured, reticulum; nuchal loop rarely paired, bearing an anterior, azygous notch, and nearly always having a smooth posterior border; first body band bearing an anterior, azygous notch; no band on nape; three or four dark, variably shaped dorsal bands with no paravertebral elements, bands usually as wide or wider than interspaces bearing lightened centres, edged with light tubercles; dark markings in dorsal interspaces but no light-coloured tubercles; anterodorsal margins of thighs, brachia and ventrolateral fold pigmented; eight or nine light caudal bands bearing dark markings in adults and usually encircling tail; nine dark caudal bands wider than light caudal bands; and mature regenerated tail spotted.

Comparisons: Cyrtodactylus linnwayensis sp. nov. is part of the linnwayensis group. Student’s t-tests indicate that C. linnwayensis sp. nov. and its sister species C. shwetaungorum are statistically different in their mean values of paravertebral tubercles and longitudinal rows of tubercles, generally indicating that C. shwetaungorum is more tuberculate than C. linnwayensis sp. nov. (Table 8). It differs further from C. shwetaungorum sp. nov. by having four vs. three rows of enlarged post-precloacal scale rows, a much lighter ground colour, light caudal bands that do not encircle the tail and a mature regenerated tail that is spotted (Table 8). The PCA analysis which loads most heavily for the total number of fourth toe lamellae and the number of post-precloacal scales—accounting for 54% of the total variation along the first two components (Table S1)— shows they occupy non-overlapping regions in morphospace (Fig. 12). The genetic distance between the species of this group is 10.2% (Table 10) and morphological and colour pattern differences from other species in the Indo-Chinese clade are listed in Table 8. 
EtymologyThe specific epithet, linnwayensis, is a noun in apposition in reference to Linn-Way Village near the type locality. 
  • Grismer, L. L., Wood, P. L., Poyarkov, N. A., Le, M. D., Kraus, F., Agarwal, I., ... & Grismer, J. L. 2021. Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71: 101–154 - get paper here
  • GRISMER, L. LEE; PERRY L. WOOD JR., EVAN S. H. QUAH, MYINT KYAW THURA,<br />JAMIE R. OAKS & AUNG LIN 2019. A new species of Bent-toed Gecko (Squamata, Gekkonidae, Cyrtodactylus) from the Shan Plateau in eastern Myanmar (Burma). Zootaxa 4624 (3): 301–321 - get paper here
  • GRISMER, L. LEE; PERRY L. WOOD, JR., MYINT KYAW THURA, EVAN S. H. QUAH,<br />MARTA S. GRISMER, MATTHEW L. MURDOCH, ROBERT E. ESPINOZA & AUNG LIN 2018. A new Cyrtodactylus Gray, 1827 (Squamata, Gekkonidae) from the Shan Hills and the biogeography of Bent-toed Geckos from eastern Myanmar. Zootaxa 4446 (4): 477–500 - get paper here
  • Grismer, L.L.; PERRY L. WOOD, JR., MYINT KYAW THURA, THAW ZIN, EVAN S. H. QUAH, MATTHEW L. MURDOCH, MARTA S. GRISMER, AUNG LIN, HTET KYAW and NGWE LWIN 2017. Twelve new species of Cyrtodactylus Gray (Squamata: Gekkonidae) from isolated limestone habitats in east- central and southern Myanmar demonstrate high localized diversity and unprecedented microendemism. Zoological Journal of the Linnean Society 182: 862-959 - get paper here
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