Özet:

In this study, tomatoes (Lycopersicum esculentum Mill) in the district of Beypazari (Ankara) entered the nuts with nuts. Discotylenchus (Tylenchidae:Tylenchida) species have been studied in two sections, both faunistic and taxonomic. In the summer of 1991, most of the adult Tylenchida species were taken land and root samples. By preparing permanent preparations of nematodes obtained from the land samples, measurements and diagnoses of species belonging to the Discotylenchus species have been made. The definition of all species, synonyms, variations seen, spread in the fields within the scope of work, spread recorded in literature and habitats have been given. Discotylenchus attenuatus Siddiqi belonged to the Discotylenchus race in 1980 and D. Discretus Siddiqi has been identified in two species, including 1980, and it has been determined that D.attenuatus Siddiqi was the first record for Turkey in 1980.