Mononchida of Garhwal Himalayas (U.P.) India II. Two known and one new species of the genus Mononchus Bastian, 1865 (Nematoda: Mononchida)

In a survey for predatory soil nematodes of the order Mononchida, in 5 hill districts of Garhwal Himalayas, during 1994–1997, 2 known and one new species of the genus Mononchus. (M. aquaticus, M. truncatus and M. himalayensis sp. n.) were collected and are described here. M. truncatus is reported for the first time from India. M. himalayensis sp.n. colnes close to M. truncatus Bastian, 1865 and M. pulcher Andrassy, 1993. It differs from the former in the value of “ c’ ”, presence of one pre-vulval papillae, ABD and tail length. From M. pulcher it differs in having longer buccal cavity, presence of one pre-vulval papillae, tail length and in the value of “b”; “c”.