| Mecynostomum auritum (Schultze, 1851) | Oct 17, 1968 | 0.5 m | | one specimen |
| Macrostomum rubrocinctum Ax, 1951 | Oct 17, 1968 | 0.5 m | | Numerous specimens among plants. |
| Monocelis lineata (Müller, 1773) | prior to 1974 | | sand | many specimens. |
| Microdalyellia armigera (Schmidt, 1862) | Oct 17, 1968 | | | few specimens, freshwater sources of the Mangalia Lake. |
| Castrada (Castrada) viridis Volz, 1898 | Oct 17, 1968 | | | four specimens, in the swamp at the lake end. |
| Bothromesostoma personatum (Schmidt, 1848) | Oct 17, 1968 | | | Numerous specimens, among green and filamentous algae of a freshwater source. |
| Phaenocora unipunctata (Ørsted, 1843) | Oct 17, 1968 | | | Numerous specimens, in a holocrene freshwater source without vegetation. |
| Ptychopera plebeia (Beklemischev, 1927) | 1974 or earlier | | sand | among algae and sand, few specimens. |
| Gyratrix hermaphroditus Ehrenberg, 1831 | Oct 17, 1968 | | | freshwater source without vegetation. |