- Calomicrolaimus honestus (de Man, 1922) Jensen, 1978 accepted as Microlaimus honestus De Man, 1922
- Cinctonema polare (Cobb, 1914) Timm, 1978
- Microlaimus falklandiae Allgén, 1959
- Microlaimus honestus De Man, 1922
- Microlaimus latilaimus Allgén, 1959
- Microlaimus longispiculum Timm, 1961
- Microlaimus papilliferus Allgén, 1959
- Microlaimus problematicus Allgén, 1932 (uncertain > taxon inquirendum)
- Microlaimus tenuispiculum de Man, 1922