Vipera berus sachalinensis
# Vipera berus sachalinensis

Vipera berus sachalinensis (Sakhalin Island adder a.k.a. Sakhalin adder) is a viper subspecies endemic to Asia. 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.

