Phylum Parabasalia Honigberg, 1973 see Infraphylum Parabasalia Honigberg, 1973
   Class Trichonymphea Hartmann, 1911
     Order Trichonymphida Hartmann, 1911
       Family Hoplonymphidae Light, 1926
         1 Genus Hoplonymphaᵀ Light, 1926
         2 Genus Barbulanympha Cleveland, Hall, Sanders & Collier, 1934
         3 Genus Rhynchonympha Cleveland, Hall, Sanders & Collier, 1934
         4 Genus Urinympha Cleveland, Hall, Sanders & Collier, 1934