| Scientific Name | Author | English Name |
|---|---|---|
| Choniolaimus chiliensis | Murphy, 1964 | |
| Choniolaimus papillatus | Ditlevsen, 1918 | |
| Cobbionema acrocerca | Filipjev, 1922 | |
| Gammanema cancellatum | Gerlach, 1955 | |
| Gammanema rapax | (Ssaweljev, 1912) | |
| Gammanema smithi | Murphy, 1964 | |
| Halichoanolaimus dolichurus | Ssaweljev, 1912 | |
| Halichoanolaimus duodecimpapillatus | Timm, 1952 | |
| Halichoanolaimus longicauda | Ditevsen, 1918 | |
| Halichoanolaimus macrospiculatus | Hopper, 1961 | |
| Halichoanolaimus quattuordecimpapillatus | Chitwood, 1951 | |
| Halichoanolaimus raritanensis | Hasbrouck, 1866 | |
| Halichoanolaimus robustus | (Bastian, 1865) | |
| Latronema aberrans | (Allgen, 1934) | |
| Latronema sertatum | Wieser, 1959 | |
| Pseudonchus deconincki | Warwick, 1969 | |
| Pseudonchus donsi | Allgen, 1948 | |
| Pseudonchus gerlachi | Warwick, 1969 | |
| Pseudonchus jenseni | Murphy, 1964 | |
| Pseudonchus kosswigi | Murphy, 1964 | |
| Pseudonchus longus | Allgen, 1949 | |
| Pseudonchus northumbriensis | Warwick, 1969 | |
| Pseudonchus norwegicus | Allgen, 1933 | |
| Pseudonchus rotundicephalus | Cobb, 1920 | |
| Pseudonchus symmetricus | De Coninck, 1942 |