| Macrostomum appendiculatum Fabricius, 1826 | [with synonyms] | w | latest taxonomic authority | |
| Macrostomum appendiculatum (1) Beklemischev, 1951 | | w | primary taxonomic authority (describer) | |
| Macrostomum clavistylum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | |
| Macrostomum contortum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 34-35 |
| Macrostomum fergussoni Beklemischev, 1951 | | w | primary taxonomic authority (describer) | |
| Macrostomum hystricinum Beklemischev, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Macrostomum lacustre Beklemischev, 1951 | | w | primary taxonomic authority (describer) | |
| Macrostomum parthenopeum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 32-33 |
| Macrostomum phytophilum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 33, 35 |
| Macrostomum rossicum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | |
| Macrostomum inflatum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 34 |
| Macrostomum ensiferum Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 33 |
| Macrostomum japonicum quiritium Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 36-37 |
| Macrostomum mosquense Beklemischev, 1951 | | w | primary taxonomic authority (describer) | 36-37 |
| Macrostomum minutum Luther, 1947 | [with synonyms] | w | other taxonomic work | 38 |
| Macrostomum quiritium Beklemischev, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | 189 |
| Macrostomum orthostylum Braun, 1885 | | w | other taxonomic work | |
| Macrostomum lutheri Beklemischev, 1927 | [with synonyms] | w | other taxonomic work | 38, f. 57-58 |