| abstract | Two new species, Arctoseius productus sp. n. (N Siberia, Severnaya Zemlya, and Novosibirskie Islands) and A. babenkoi sp. n. (Spitsbergen, Novaya Zemlya, N Taimyr, Severnaya Zemlya, Novosibirskie Islands, and Wrangel Island) are described. Keys to females and males of 16 species found in Palaearctic polar deserts and arctic tundras are given, taking into account the set of morphometric characters considered in Communication 1. |