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Gekko kwangsiensis YANG, 2015

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Kwangsi Gecko
Chinese: 广西壁虎 
SynonymGekko kwangsiensis YANG 2015
Gekko (Japonigekko) kwangsiensis — WOOD et al. 2019 
DistributionChina (Guangxi)

Type locality: Wuming County, Nanning City, Guangxi Zhuang Autonomous Region, China  
TypesHolotype: KFBG 14076, adult male, collected on 10 July 2013 by J.H. Yang and Sheng Zheng.
Paratypes: Five paratypes: two adult males KFBG 14074–75; one adult female KFBG 14077; one subadult female KFBG 14078; one subadult male KFBG 14079; data identical to the holotype. 
DiagnosisDiagnosis. Gekko kwangsiensis sp. nov. can be distinguished from other congeners by a combination of following characters: body relatively small (SVL 64.2–69.7 mm in adults), slender; nares in contact with rostral; internasal absent or single; postmentals two (rarely three), enlarged; interorbital scales between anterior corners of the eyes 29–31; dorsal tubercle rows 9–11; ventral scales between mental and cloacal slit 185–208; midbody scale rows 143–156; ventral scale rows 41–45; subdigital lamellae on first toe 11–13, on fourth toe 13–18; finger and toe webbing weakly developed; tubercles absent on upper surface of fore limbs and hind limbs; precloacal pores nine to ten in males, absent in females; postcloacal tubercle single; tubercles present on dorsal surface of tail base; subcaudals enlarged; dorsal surface of body with 9–10 thin light bands between nape and sacrum, and dorsal surface of tail with remarkable black and white bands.

Comparisons. I compare Gekko kwangsiensis sp. nov. with all 20 currently recognized species within the G. japonicus species group. In having tubercles on dorsum, Gekko kwangsiensis sp. nov. can be easily distinguished from G. melli (Vogt), G. scientiadventura Rösler, Ziegler, Vu, Herrmann & Böhme, G. subpalmatus (Günther) and G. tawaensis Okada, versus dorsal tubercles absent in these species. In having a single postcloacal tubercle, Gekko kwangsiensis sp. nov. can be easily distinguished from G. auriverrucosus Zhou & Liu (2–3), G. canhi Zhou & Liu (2–3), G. japonicus (Schlegel) (2–4), G. scabridus Liu & Zhou (2–3), G. scientiadventura (2–3), G. swinhonis Günther (2–3), G. taibaiensis Song (3), G. tawaensis, G. vertebralis Toda, Sengoku, Hikida & Ota (1–2) and G. wenxianensis Zhou & Wang (2–3). In having 9–10 distinct precloacal pores in males, Gekko kwangsiensis sp. nov. can be easily distinguished from G. adleri Nguyen, Wang, Yang, Lehmann, Le, Ziegler & Bonkowski (17–21), G. chinensis (Gray) (17–27), G. palmatus Boulenger (23–30), G. scabridus (10–15, usually 12–13) and G. similignum Smith (17), as well as G. shibatai Toda, Sengoku, Hikida & Ota, G. tawaensis and G. vertebralis (adult males lacking distinct precloacal pores in these three species).
From the remaining species, Gekko kwangsiensis sp. nov. differs from G. hokouensis Pope in having more precloacal pores (9–10 versus 5–9, usually 6–7 in hokouensis), more preorbitals (18–19 versus 13 in hokouensis), fewer dorsal tubercle rows (9–11 versus 12–14 in hokouensis), more subdigital lamellae under first and fourth toes (11–13 versus 6–9 and 13–18 versus 7–9, respectively, in hokouensis), and a different dorsal pattern. Gekko kwangsiensis sp. nov. differs from G. liboensis Zhou, Liu & Li in having a relatively smaller body size (adults SVL 64.2–69.7 mm versus 76–85 mm in liboensis), fewer interorbitals (29–31 versus 40 in liboensis), more subdigital lamellae under first and fourth toes (11–13 versus 8 and 13–18 versus 9, respectively, in liboensis), dorsal tubercles round and convex (versus dorsal tubercles round and flat in liboensis), and a different dorsum pattern. Gekko kwangsiensis sp. nov. differs from G. yakuensis Matsui & Okada in having more precloacal pores (9–10 versus 6–8 in yakuensis), dorsal tubercles present on the dorsal surface of tail base but not extending posteriorly (versus paired median tubercles present on the whole length of the original tail in yakuensis), and a different dorsal pattern [YANG 2015]. 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
  • LUU, VINH QUANG; TRUONG QUANG NGUYEN, MINH DUC LE, MICHAEL BONKOWSKI, THOMAS ZIEGLER 2017. A new karst dwelling species of the Gekko japonicus group (Squamata: Gekkonidae) from central Laos. Zootaxa 4263 (1): 179-193 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Wang, Kai; Jinlong Ren, Hongman Chen, Zhitong Lyu, Xianguang Guo Ke Jiang, Jinmin Chen, Jiatang Li, Peng Guo, Yingyong Wang, Jing Che 2020. The updated checklists of amphibians and reptiles of China. Biodiversity Science 28 (2): 189-218 - get paper here
  • Wood Jr, Perry L.; Xianguang Guo, Scott L. Travers, Yong-Chao Su, Karen V. Olson, Aaron M. Bauer, L. Lee Grismer, Cameron D. Siler, Robert G. Moyle, Michael J. Andersen, Rafe M. Brown 2019. Parachute geckos free fall into synonymy: Gekko phylogeny, and a new subgeneric classification, inferred from thousands of ultraconserved elements. bioRxiv 717520 - get paper here
  • YANG, JIAN-HUAN 2015. A new species of the genus Gekko Laurenti (Squamata: Sauria: Gekkonidae) from Guangxi, China. Zootaxa 3936 (2): 287–295 - get paper here
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