| Order | Family | Genus | Species |
|---|---|---|---|
| Araeolaimida | 5 | 26 | 353 |
| Chromadorida | 8 | 55 | 611 |
| Desmodorida | 7 | 58 | 595 |
| Desmoscolecida | 4 | 5 | 129 |
| Dioctophymatida | 2 | 4 | 131 |
| Dorylaimida | 18 | 112 | 1142 |
| Enoplida | 18 | 84 | 1174 |
| Isolaimida | 1 | 1 | 5 |
| Marimermithida | 1 | 2 | 4 |
| Mermithida | 2 | 19 | 161 |
| Monhysterida | 6 | 50 | 602 |
| Mononchida | 6 | 21 | 188 |
| Muspiceida | 2 | 2 | 4 |
| Plectida | 17 | 50 | 437 |
| Rhabditida | 147 | 973 | 11840 |
| Rhaptothyreida | 1 | 1 | 1 |
| Trichinellida | 6 | 18 | 731 |
| Triplonchida | 10 | 26 | 459 |