| Kathlaniidae Lane, 1914 |
| Kathlaniinae Lane, 1914 |
| Kathlaniini Lane, 1914 |
| Kathlaniinii Lane, 1914 |
| Neocruzia Yamaguti, 1961 |
| Neocruzia morleyi (Pearse, 1936) Yamaguti, 1961 |
| Probstmayria Ransom, 1917 |
| Probstmayria tapiri Waerebeke, Chabaud & Anthony, 1988 |
| Probstmayria vivipara (Probstmayr, 1865) Ransom, 1907 |
| Spironoura Leidy, 1856 |
| Spironoura affine Leidy, 1856 |
| Spironoura affinis Caballero, 1939 nec Leidy, 1858 |
| Spironoura concinnae Mackin, 1936 |
| Spironoura intermedia Caballero, 1939 |
| Spironoura ranae Walton, 1941 |
| Spironoura wardi Mackin, 1936 |