Vipera berus sachalinensis (Sakhalin Island adderMehrtens JM. 1987. Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp. . a.k.a. Sakhalin adderBrown JH. 1973. Toxicology and Pharmacology of Venoms from Poisonous Snakes. Springfield, Illinois: Charles C. Thomas. 184 pp. LCCCN 73-229. .) is a viper subspecies endemic to Asia.Mallow D, Ludwig D, Nilson G. 2003. True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Company. 359 pp. . Like all other vipers, it is venomous.
Geographic range It is found in the Russian Far East (Amur), China (Jilin), North Korea, and on Sakhalin Island.
According to Schwarz (1936), the type locality is "Sachalin" (= Sakhalin Island, Russia).
Taxonomy McDiarmid et al. (1999) follow Golay et al. (1993) and recognize V. b. sachalinensis as a subspecies of V. berus. However, it has been considered a full species in recent literature.
References
Further reading Golay P, Smith HM, Broadley DG, Dixon JR, McCarthy CJ, Rage J-C, Schätti B, Toriba M. 1993. Endoglyphs and Other Major Venomous Snakes of the World. A Checklist. Geneva: Azemiops. 478 pp. Schwarz, Ernst. 1936. Untersuchungen über Systematik und Verbreitung der europäischen und mediterranen Otter. In: Die europäischen und mediterranen Ottern und ihre Gifte. Behringwerk-Mitteilungen 7: 159-362. Zarevskij, Sergei Fedorovich. 1917. [New Forms of the Genus Vipera found in the Russian Empire: Vipera tigrina, new species, and Vipera berus var. sachalinensis, new variation?]. [Annals of the Museum of Zoology of the Academy of Sciences, Petrograd ] 21: 37. (in Russian).
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