Criconematidae - (ring nematodes)
This family of nematodes is widely distributed and includes plant ectoparasites with transverse annules, a thick cuticle, a long, massive stylet and without a typical lateral field. The body is usually short and sausage-shaped, but some species can reach a length of about 2 mm. A number of species are economically important as crop pests like Mesocriconema xenoplax which infests fruit trees in various regions.
The following genera are currently entered in the system: