| Dioctophyma Collet-Meygret, 1802 |
| Dioctophyma renale (Goeze, 1782) Collet-Meygret, 1802 |
| Dioctophymatidae Railliet, 1915 |
| Dioctophymatinae Castellani & Chalmers, 1910 |
| Eustrongylides Jägerskiöld, 1909 |
| Eustrongylides tubifex (Nitzsch, 1819) Jägerskiöld, 1909 |
| Eustrongylinae Chitwood, B. G. & Chitwood, M. B., 1937 |
| Hystrichis Dujardin, 1845 |
| Hystrichis tricolor Dujardin, 1845 |
| Hystrichis varispinosus Jägerskiöld, 1909 |