Two new species of the genus Narynia (Collembola, Isotomidae) from China

Two new species of the genus Narynia Martynova from China are described: Narynia alxaica sp. nov. from the western Inner Mongolia Autonomous Region, northern China and Narynia ritongensis sp. nov. from Xizang Province, southwestern China. The two new species can be separated from known species by the length ratio (lateral vs. medial) and location of sensilla on abdominal segment V. An identification key to the species of the genus Narynia is given.