| Convoluta convoluta (Abildgaard, 1806) | prior to 1905 | littoral | | |
| Promesostoma ovoideum ovoideum Graff, 1905 | 1913 or earlier | | | Lago grande near Meleda. |
| Polycystis mamertina (Graff, 1874) | 1913 or earlier | | | |
| Pseudostomum quadrioculatum (Leuckart, 1847) | 1913 or earlier | | | Lago grande von Meleda. |
| Otocelis rubropunctata (Schmidt, 1852) | 1933 or earlier | | | Lago grande. |
| Convoluta schultzii Schmidt, 1852 | 1933 or earlier | | | Lago grande. |
| Convoluta convoluta (Abildgaard, 1806) | 1933 or earlier | | | |
| Convoluta sordida Graff, 1882 | 1933 or earlier | | | |
| Proporus venenosus (Schmidt, 1852) | 1905 or earlier | | | Adria (Triest, Lesina, Meleda). |
| Otocelis rubropunctata (Schmidt, 1852) | 1905 or earlier | | | Adria (Triest, Lesina, Lissa, Meleda). |