Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Nematoda Gegenbaur, 1859 - round worms
     Class Chromadorea Inglis, 1983
       Subclass Plectia Hodda, 2007
         Superorder Rhabditica Hodda, 2007
           Order Spirurida Railliet, 1914
             Suborder Spirurina Railliet & Henry, 1915
               Superfamily Lucionematoidea Moravec, Molnar & Szekely, 1998 [monotypic]
                 1 Family Lucionematidae Moravec, Molnar & Szekely, 1998