| Nominal Species (n = 17) | Present allocation (n = 17) | Ref. |
|---|---|---|
| Sphaerolaimus abyssorum Allgen, 1933 | Sphaerolaimus abyssorum | 19 |
| Doliolaimus agilis Lorenzen, 1966 | Doliolaimus agilis | 19 |
| Sphaerolaimus anterides Inglis, 1961 | Sphaerolaimus anterides | 19 |
| Sphaerolaimus balticus Schneider | Sphaerolaimus balticus | 19 |
| Sphaerolaimus brevicollis Ssaweljev, 1912 | Sphaerolaimus brevicollis | 19 |
| Sphaerolaimus dispar Filipjev, 1918 | Sphaerolaimus dispar | 19 |
| Sphaerolaimus duplex Allgen, 1952 | Sphaerolaimus duplex | 19 |
| Sphaerolaimus gracilis De Man 1876 | Sphaerolaimus gracilis | 19 |
| Buccolaimus grahami Allgen, 1959 | Buccolaimus grahami | 19 |
| Sphaerolaimus hirsutus Bastian, 1865 | Sphaerolaimus hirsutus | 19 |
| Sphaerolaimus islandicus Ditlevsen, 1926 | Sphaerolaimus islandicus | 19 |
| Sphaerolaimus lodosus Gerlach, 1956 | Sphaerolaimus lodosus | 19 |
| Sphaerolaimus megamphis Wieser, 1956 | Sphaerolaimus megamphis | 19 |
| Sphaerolaimus pacificus Allgen, 1947 | Sphaerolaimus pacificus | 19 |
| Sphaerolaimus penicillus Gerlach, 1956 | Sphaerolaimus penicillus | 19 |
| Sphaerolaimus striatus Allgen, 1935 | Sphaerolaimus striatus | 19 |
| Sphaerolaimus uncinatus Freudenhammer, 1970 | Sphaerolaimus uncinatus | 19 |