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Achalinus formosanus BOULENGER, 1908

IUCN Red List - Achalinus formosanus - Least Concern, LC

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Higher TaxaXenodermidae, Colubroidea, Alethinophidia, Serpentes, Squamata (snakes) 
SubspeciesAchalinus formosanus chigirai OTA & TOYAMA 1989
Achalinus formosanus formosanus BOULENGER 1908 
Common NamesFormosa Odd-scaled Snake 
SynonymAchalinus formosanus BOULENGER 1908: 221
Achalinopsis sauteri STEINDACHNER 1913: 219
Achalinopsis sauteri — ZONG & MA 1983
Achalinus formosanus — SHIE 2005
Achalinus formosanus — WALLACH et al. 2014: 5

Achalinus formosanus chigirai OTA and TOYAMA 1989
Achalinus formosanus chigirai — GORIS & MAEDA 2004: 203
Achalinus formosanus chigirai — O’SHEA 2018 
DistributionTaiwan, Japan (S Ryukyu islands)

Type locality: “Punkiho, Kagi district, Central Formosa”  
TypesType: BMNH 1946.1.7.78 (and possibly additional specimens).
Holotype: OMNH (Osaka) R2673, an adult male, collected on a road at night on 18 May 1985, by K. Miyagi. [chigirai] 
CommentConservation: A. f. chigirai is classified as “near threatened” in Japan (Ota 2000). 
EtymologyNamed after its distribution in Taiwan (= Formosa). 
  • Boulenger, GEORGE A. 1908. Description of a new frog and a new snake from Formosa. Ann. Mag. Nat. Hist. (8) 2: 221-222 - get paper here
  • Chen, Y. 2009. Conservation biogeography of the snake family Colubridae of China. North-Western Journal of Zoology 5 (2): 251-262 - get paper here
  • Goris, R.C. & Maeda, N. 2004. Guide to the Amphibians and Reptiles of Japan. Krieger, Malabar, 285 pp.
  • Ota, H. 2000. Current status of the threatened amphibians and reptiles of Japan. Popul. Ecol. 42: 5-9
  • Ota, H. and Toyama, M. 1989. Two additional specimens of Achalinus formosanus chigirai (Colubridae: Ophidia) from the Yaeyama Group, Ryukyu Archipelago. Japanese Journal of Herpetology 13 (2): 40-43
  • Ota, H. and Toyama, M. 1989. Taxonomic re-definition of Achalinus formosanus Boulenger (Xenoderminae: Colubridae: Ophidia), with description of a new subspecies. Copeia 1989 (3): 597-602 - get paper here
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - get paper here
  • Shie, Jia-Rung 2005. Phylogeography of Odd-scaled Snake Achalinus in Taiwan. Masters thesis, National Sun Yat-sen University, 53 pp.
  • Steindachner, F. 1913. Über zwei neue Schlangenarten aus Formosa. Anz. Kaiserl. Akad. Wiss. Wien, Math.-Nat. Ser. 50: 218-220
  • Stejneger, L. 1910. The batrachians and reptiles of Formosa. Proc. US Natl. Mus. 38: 91-114 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
  • Zhao, E.M. 2006. The snakes of China [in Chinese]. Hefei, China, Anhui Sience & Technology Publ. House, Vol. I, 372 pp., Vol. II (color plates), 280 pp.
  • Zong Y; Ma J 1983. A new species of the genus Achalinopsis from Jiangxi and the restoration of this genus [in Chinese]. Acta Herpetologica Sinica 2 (2): 61-63 - get paper here
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