| Planaria dubia Borelli, 1895 | 1902 or earlier | | | Mit dieser Art ist, glaube ich, eine aus dem Rio de la Plata bei Buenos-Aires stammende Planarie zu identificiren, die mir leider nur in einem Exemplare vorlag. |
| Gieysztoria atalaya Brusa, Damborenea, and Norena, 2008 | 2008 or earlier | | | |
| Gieysztoria evelinae Marcus, 1946 | 2008 or earlier | | | |
| Gieysztoria falx Brusa, Damborenea, & Noreña, 2003 | 2008 or earlier | | | |
| Gieysztoria hymanae Marcus, 1946 | 2008 or earlier | | | |
| Gieysztoria matilde Brusa, Damborenea, and Norena, 2008 | 2008 or earlier | | | |
| Nygulgus evelinae Marcus, 1954 | 2008 or earlier | | | |
| Plagiostomum cilioejaculator Brusa, 2006 | 2006 or earlier | | | |
| Temnocephala talicei Dioni, 1967 | 1997 or earlier | | | host Aegla platensis Schmitt |