Phylum Nematoda Gegenbaur, 1859 - round worms
Class Secernentea Von Linstow, 1905
Subclass Tylenchia (Thorne, 1949) Inglis, 1983
Order Tylenchida G. Thorne, 1949
Suborder Hexatylina Siddiqi, 1980
Superfamily Sphaerularioidea Lubbock, 1861
Family Neotylenchidae Thorne, 1941
Subfamily Fergusobiinae Goodey, 1963
Genus Fergusobia (Currie, 1937) Christie, 1941