| Macrostomum hystricinum Chodorowski, 1959 | | w | primary taxonomic authority (describer) | |
| Macrostomum phytophilum Beklemischev, 1951 | | w | other research on this sp. | 39-40 |
| Castrada (Castrada) hofmanni Braun, 1885 | | w | other research on this sp. | |
| Castrada (Castrada) armata (Fuhrmann, 1894) | [with synonyms] | w | other research on this sp. | |
| Castrada (Castrada) quadridentata Hofsten N, 1907 | | w | other research on this sp. | 63 |
| Mesostoma rhynchotum Braun, 1885 | | w | other research on this sp. | 42 u.s.w., Ökol. |
| Bothromesostoma essenii Braun, 1885 | | w | other research on this sp. | |
| Macrostomum rostratum Papi, 1951 | [with synonyms] | w | other research on this sp. | 39-40, Foto 1. |
| Macrostomum distinguendum Papi, 1951 | [with synonyms] | w | other taxonomic work | 29-30, Foto 2 |