New species of spiral nematode from the mountain tundra of Kamchatka]

A new species of nematodes, Rotylenchus alpinus sp. n., is described. The species was found in the rhizosphere of Vaccinum uliginosum and Arctous alpina from the mountain tundra of Kamchatka. It differs from the close species R. orientalis in having a higher place of entering of the oesophagal dorsal gland duct, well developed hind ovary and in having males. From R. goodeyi the species differs by a lower place of entering of the dorsal gland duct, smaller sizes of the body and gubernaculum.