| Order | Family | Genus | Species |
|---|---|---|---|
| Araeolaimida | 3 | 26 | 343 |
| Benthimermithida | 1 | 1 | 3 |
| Chromadorida | 7 | 55 | 591 |
| Desmodorida | 6 | 46 | 491 |
| Desmoscolecida | 1 | 5 | 128 |
| Dioctophymatida | 2 | 4 | 127 |
| Dorylaimida | 18 | 102 | 1086 |
| Enoplida | 18 | 83 | 1161 |
| Isolaimida | 1 | 1 | 4 |
| Marimermithida | 1 | 2 | 4 |
| Mermithida | 2 | 20 | 157 |
| Monhysterida | 5 | 48 | 589 |
| Mononchida | 6 | 21 | 180 |
| Muspiceida | 2 | 2 | 4 |
| Plectida | 14 | 47 | 424 |
| Rhabditida | 136 | 873 | 11363 |
| Rhaptothyreida | 1 | 1 | 1 |
| Trichinellida | 6 | 18 | 716 |
| Triplonchida | 9 | 24 | 427 |