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Gekko tawaensis OKADA, 1956

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Tawa Gecko 
SynonymGekko tawaensis OKADA 1956: 239
Gekko tawaensis — NAKAMURA & UÉNO 1963: 93
Gekko tawaensis — WERMUTH 1965: 41
Gekko tawaensis — KLUGE 1993
Gekko tawaensis — RÖSLER 2000: 82
Gekko (Japonigekko) tawaensis — WOOD et al. 2019
Gekko (Japonigekko) tawaensis — WOOD et al. 2020 
DistributionJapan (Shikoku, Provinces Kagawa, Kagawa)

Type locality: Tawa, Nagao-machi, Okawa-gun, Kagawa Prefecture, Shikoku, Japan.  
Reproductionoviparous. Hybridization: G. tawaensis hybridizes with G. japonicus (Okamoto et al., 2025). 
TypesHolotype: not given. 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 44 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy: This species appears to be synonymous to Gekko japonicus as the two species hybridize readily. 
References
  • Goris, R.C. & Maeda, N. 2004. Guide to the Amphibians and Reptiles of Japan. Krieger, Malabar, 285 pp.
  • 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
  • Nakamura K & Uéno SI 1963. Japanese Reptiles and Amphibians in Colour [in Japanese]. Hoikusha, Osaka
  • NGUYEN, TRUONG QUANG; YING-YONG WANG, JIAN-HUAN YANG, TANJA LEHMANN, MINH DUC LE, THOMAS ZIEGLER, MICHAEL BONKOWSKI 2013. A new species of the Gekko japonicus group (Squamata: Sauria: Gekkonidae) from the border region between China and Vietnam. Zootaxa 3652 (5): 501–518 - get paper here
  • Okada, Sumio;Okawa, Hiroshi 1994. Gekko tawaensis in Hiroshima and Yamaguchi Prefectures. Japanese Journal of Herpetology 15 (4): 141-142
  • Okada, Y. 1956. A new species of gekko from Shikoku, Japan. Annotaiones Zoologicae Japonenses, 29: 239-241.
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Shibaike, Y. et al. 2009. Chromosome Evolution in the Lizard Genus Gekko (Gekkonidae, Squamata, Reptilia) in the East Asian Islands. Cytogenet Genome Res 127: 182-190 - get paper here
  • Toda, M., Hikida, T., Okada, S. & Ota, H. 2003. Contrasting patterns of genetic variation in the two sympatric geckos Gekko tawaensis and G. japonicus (Reptilia: Squamata) from western Japan, as revealed by allozyme analyses. Heredity (Edinb). 90, 90–97 (2003) - get paper here
  • Toda, M.; Okada, S.; Hikida, T.; Ota, H. 2006. Extensive natural hybridization between two geckos, Gekko tawaensis and Gekko japonicus (Reptilia: Squamata), throughout their broad sympatric area. Biochemical Genetics 44(1-2):1-17. - 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 [preprint] - get paper here
  • Wood, P. L., Guo, X., Travers, S. L., Su, Y. C., Olson, K. V., Bauer, A. M., Grismer, L. L., Siler, C. D., Moyle, R. G., Andersen, M. J. and Brown, R. M. 2020. Parachute geckos free fall into synonymy: Gekko phylogeny, and a new subgeneric classification, inferred from thousands of ultraconserved elements. Molecular Phylogenetics and Evolution 146: 106731 [corrigendum: MPE 164: 107255] - get paper here
  • Xu Y, Ma S, Cai B, Qi S, Matsukoji T, Poyarkov NA, Sun F, Weng S, Gu T, Tian K, Zhang D, Jiang J, Peng L 2025. A new rock-dwelling gecko of the subgenus Japonigekko (Squamata, Gekkonidae, Gekko) from northwestern Sichuan Province, China. Zoosystematics and Evolution 101(4): 2221-2242 - get paper here
  • YANG, JIAN-HUAN; YING-YONG WANG, TIAN-DU ZHANG, YAN-JUN SUN & SHI-SHI LIN 2012. Genetic and morphological evidence on the species validity of Gekko melli Vogt, 1922, with notes on its diagnosis and range extension (Squamata: Gekkonidae). Zootaxa 3505: 67–74 - get paper here
  • Cao, J., Poyarkov, N.A., Wei, P., Tie, M., Matsukoji, T., Suwannapoom, C., Ai, R., Lu, W., Sucharitakul, P., Wang, H., Chomdej, S., Yuan, Z. & Yan, F. 2026. Diversity, Phylogeny, and biogeography of the subgenus Japonigekko (Gekkonidae: Gekko). Molecular Phylogenetics and Evolution, 108530 - get paper here
 
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