| Nominal Species (n = 74) | Present allocation (n = 73) | Ref. |
|---|---|---|
| Procamacolaimus acer Gerlach, 1954 | Procamacolaimus acer | 19 |
| Leptolaimus acicula Lorenzen, 1966 | Leptolaimus acicula | 19 |
| Chronogaster alata Gerlach, 1956 | Chronogaster alata | 19 |
| Leptolaimus alatus Vitiello, 1971 | Leptolaimus alatus | 19 |
| Aphanolaimus anisitsi Daday, 1905 | Paraphanolaimus anisitsi | 75097 |
| Aplectus antarcticus Cobb, 1914 | Aplectus antarcticus | 19 |
| Dagda asymmetrica Gerlach, 1953 | Dagda asymmetrica | 19 |
| Aphanolaimus attentus De Man, 1880 | Aphanolaimus attentus | 19 |
| Necolaimus austrogeorgiae Allgen, 1959 | Necolaimus austrogeorgiae | 19 |
| Paraphanolaimus behningi Micoletzky, 1923 | Paraphanolaimus behningi | 19 |
| Dagda bipapillata Southern, 1914 | Dagda bipapillata | 19 |
| Chronogaster boettgeri Kischke, 1956 | Chronogaster boettgeri | 19 |
| Leptolaimus boucheri Geng & Hao & Huang, 2022 | Leptolaimus boucheri | 3477 |
| Donsinemella camacolaimoides Allgen, 1949 | Donsinemella camacolaimoides | 19 |
| Paraplectonema canadianum Hopper, 1968 | Paraplectonema canadianum | 19 |
| Paraphanolaimus cantor Gerlach, 1957 | Paraphanolaimus cantor | 19 |
| Alaimella cincta Cobb, 1920 | Alaimella cincta | 19 |
| Aphanolaimus cobbi Micoletzky, 1922 | Aphanolaimus cobbi | 19 |
| Ionema coecum Kreis, 1963 | Ionema coecum | 19 |
| Aphanolaimus communis Cobb, 1915 | Aphanolaimus communis | 19 |
| Cricolaimus coronatus Ditlevsen, 1930 | Cricolaimus coronatus | 19 |
| Procamacolaimus cosmius Gerlach, 1956 | Procamacolaimus cosmius | 19 |
| Digitonchus cylindricaudatus Chitwood, 1951 | Acontiolaimus cylindricaudatus | 75097 |
| Chronogaster daoi Loof, 1964 | Chronogaster daoi | 19 |
| Paradoxolaimus demani Kreis, 1924 | Paradoxolaimus demani | 19 |
| Procamacolaimus dolichostylum Gerlach, 1953 | Procamacolaimus dolichostylum | 19 |
| Aphanolaimus duodecimpapillatus Kreis, 1932 | Aphanolaimus viviparus | 75097 |
| Dermatolaimus elegans Stekhoven & De Coninck, 1933 | Leptolaimus elegans | 75097 |
| Stephanolaimus elegans Ditlevsen, 1932 | Stephanolaimus elegans | 19 |
| Cricolaimus elongatus Southern, 1914 | Cricolaimus elongatus | 19 |
| Ypsilon exile Cobb, 1920 | Camacolaimus exilis | 75097 |
| Stephanolaimus flevensis Stekhoven, 1935 | Stephanolaimus flevensis | 19 |
| Rhadinema flexile Cobb, 1920 | Rhadinema flexile | 19 |
| Anomonema haplostoma Hopper, 1963 | Anomonema haplostoma | 19 |
| Bathyonchus indicus Kreis, 1936 | Bathyonchus indicus | 19 |
| Cynura klunderi Murphy, 1965 | Cynura klunderi | 19 |
| Assia laureata Gerlach, 1957 | Assia laureata | 19 |
| Cephalobus longicollis Daday, 1899 | Chronogaster longicollis | 75097 |
| Paraphanolaimus longisetosus Altherr, 1960 | Aphanolaimus longisetosus | 75097 |
| Plectolaimus magdalenae Riemann, 1970 | Plectolaimus magdalenae | 19 |
| Anonchus mangrovi Gerlach, 1957 | Anonchus mangrovi | 19 |
| Leptolaimus maximus Chitwood, 1936 | Leptolaimus maximus | 19 |
| Onchium metocellatum Wieser, 1956 | Onchium metocellatum | 19 |
| Aphanolaimus minor Cobb, 1914 | Aphanolaimus minor | 19 |
| Halaphanolaimus minutus Stekhoven, 1942 | Halaphanolaimus minutus | 19 |
| Anonchus monohystera Cobb, 1913 | Anonchus monohystera | 19 |
| Kreisonema nandi Khera, 1969 | Kreisonema nandi | 19 |
| Halaphanolaimus norvegicus Allgen, 1946 | Halaphanolaimus norvegicus | 19 |
| Nemella ocellata Cobb, 1920 | Nemella ocellata | 19 |
| Ionema ocellatum Cobb, 1920 | Ionema cobbi | 75097 |
| Onchium ocellatum Cobb, 1920 | Onchium ocellatum | 19 |
| Leptolaimus papilliger De Man, 1876 | Leptolaimus papilliger | 19 |
| Antomicron pellucidum Cobb, 1920 | Antomicron pellucidum | 19 |
| Halaphanolaimus pellucidus Southern, 1914 | Halaphanolaimus pellucidus | 19 |
| Leptolaimus plectoides Chitwood, 1951 | Leptolaimus plectoides | 19 |
| Camacolaimus praedator De Man, 1922 | Camacolaimoides praedator | 75097 |
| Camacolaimus prytherchi Chitwood, 1935 | Camacolaimus prytherchi | 19 |
| Onchium robustum Gerlach, 1965 | Onchium robustum | 19 |
| Diodontolaimus sabulosus Southern, 1914 | Diodontolaimus sabulosus | 19 |
| Leptolaimus setiger Stekhoven & De Coninck, 1933 | Leptolaimus setiger | 19 |
| Neurella simplex Cobb, 1920 | Neurella simplex | 19 |
| Stephanolaimus spartinae Lorenzen, 1969 | Stephanolaimus spartinae | 19 |
| Aphanolaimus spiriferus Cobb, 1914 | Aphanolaimus spiriferus | 19 |
| Anguinoides stylosus Chitwood, 1936 | Anguinoides stylosus | 19 |
| Camacolaimus tardus De Man, 1889 | Camacolaimus tardus | 19 |
| Diodontolaimus tenuispiculum Gerlach, 1955 | Diodontolaimus tenuispiculum | 19 |
| Leptolaimus thermastris Lorenzen, 1966 | Leptolaimoides thermastris | 75097 |
| Alaimella truncata Cobb, 1920 | Alaimella truncata | 19 |
| Procamacolaimus tubifer Gerlach, 1953 | Procamacolaimus tubifer | 19 |
| Leptolaimoides tubulosus Vitiello, 1971 | Leptolaimoides tubulosus | 19 |
| Cynura uniformis Cobb, 1920 | Cynura uniformis | 19 |
| Digitonchus uniformis Cobb, 1920 | Acontiolaimus uniformis | 75097 |
| Leptolaimus venustus Lorenzen, 1972 | Leptolaimus venustus | 19 |
| Aphanolaimus viviparus Plotnikov, 1901 | Aphanolaimus viviparus | 19 |