| Dicheilonematinae Wehr, 1935 |
| Diplotriaena Railliet & Henry, 1909 |
| Diplotriaena bargusinica Skrjabin, 1917 |
| Diplotriaena conceptionis Caballero, 1948 |
| Diplotriaena rovegliai Caballero, 1941 |
| Diplotriaena tricuspis (Fedtschenko, 1874) Henry & Ozoux, 1909 |
| Diplotriaenidae Skrjabin, 1916 |
| Diplotriaeninae Skrjabin, 1916 |
| Hamatospiculum Skrjabin, 1916 |
| Hamatospiculum insigne (Scheider, 1866) Skrjabin, 1916 |
| Hastospiculum Skrjabin, 1923 |
| Hastospiculum onchocercum Chitwood, B. G., 1932 |
| Monopetalonema Diesing, 1861 |
| Monopetalonema alcedinis (Rudolphi, 1819) Diesing, 1861 |
| Monopetalonema solitarium Caballero, 1948 |