Two new species of Mongolicosa Marusik, Azarkina et Koponen, 2004 are described from Mongolia: M. przhewalskii sp. n. (♀♂) and M. uncia sp. n. (♀♂). A map with distribution records of all known Mongolicosa species and descriptions of new species are provided.
Keywords: Araneae, Aranei, wolf spiders, Central Asia, new species.