| Leucolesma corderoi Marcus, 1948 | | w | latest taxonomic authority | |
| Planarioidea Dendrocoelidae Hallez, 1892 | | w | other taxonomic work | |
| Dendrocoelidae Dendrocoelinae Hallez, 1892 | | w | other taxonomic work | |
| Dugesia dubia (Borelli, 1895) | | w | latest taxonomic authority | |
| Girardia anceps (Kenk, 1930) | [with synonyms] | w | other taxonomic work | |
| Girardia andina (Borelli, 1895) | [with synonyms] | w | other taxonomic work | |
| Girardia antillana Kenk, 1941 | [with synonyms] | w | other taxonomic work | |
| Girardia arimana (Hyman, 1957) | [with synonyms] | w | other taxonomic work | |
| Girardia arndti Marcus, 1946 | [with synonyms] | w | latest taxonomic authority | |
| Girardia dimorpha (Bohmig, 1902) | | w | latest taxonomic authority | |
| Girardia dorotocephala (Woodworth, 1897) | | w | other taxonomic work | |
| Girardia glandulosa (Kenk, 1930) | | w | latest taxonomic authority | |
| Girardia graffi (Weiss, 1909) | [with synonyms] | w | latest taxonomic authority | |
| Girardia hoernesi (Weiss, 1910) | | w | latest taxonomic authority | |
| Girardia hypoglauca Marcus, 1948 | [with synonyms] | w | latest taxonomic authority | |
| Girardia microbursalis (Hyman, 1931) | | w | latest taxonomic authority | |
| Girardia nonatoi Marcus, 1946 | | w | latest taxonomic authority | |
| Girardia paramensis (Fuhrmann, 1914) | [with synonyms] | w | other taxonomic work | |
| Girardia polyorchis (Fuhrmann, 1914) | | w | latest taxonomic authority | |
| Girardia sanchezi (Hyman, 1955) | | w | latest taxonomic authority | |
| Girardia schubarti (Marcus, 1946) | [with synonyms] | w | latest taxonomic authority | 21 |
| Girardia seclusa (de Beauchamp, 1940) | [with synonyms] | w | latest taxonomic authority | |
| Girardia striata (Weiss, 1910) | | w | latest taxonomic authority | |
| Girardia tigrina (Girard, 1850) | [with synonyms] | w | other taxonomic work | |
| Girardia veneranda (Martins, 1970) | | w | latest taxonomic authority | |
| Neppia boehmigi (Weiss, 1910) | | w | latest taxonomic authority | |
| Neppia montana (Nurse, 1950) | | w | latest taxonomic authority | 19 |
| Neppia paeta (Marcus, 1955) | [with synonyms] | w | other taxonomic work | 24-25 |
| Neppia tinga (Marcus, 1955) | [with synonyms] | w | latest taxonomic authority | 25-26 |
| Neppia wimbimba (Marcus, 1970) | [with synonyms] | w | latest taxonomic authority | |
| Schmidtea polychroa (Schmidt, 1861) | [with synonyms] | w | other taxonomic work | |
| Geoplanoidea Dugesiidae Ball, 1974 | | w | primary taxonomic authority (describer) | |
| Girardia aurita (Kennel, 1888) | [with synonyms] | w | other taxonomic work | |
| Dugesiidae Romankenkius Ball, 1974 | | w | primary taxonomic authority (describer) | 1, 5 |
| Romankenkius kenki Ball, 1974 | | w | primary taxonomic authority (describer) | 5-9, Figs. 1A, 2A, 2B, 3, 3A |
| Romankenkius pedderensis Ball, 1974 | | w | primary taxonomic authority (describer) | 9-11, Figs. 1B, 2A, 2D, 4, 4A, 4 B, 4C |
| Neppia evelinae Marcus, 1955 | [with synonyms] | w | other taxonomic work | 23-24 |
| Cura evelinae Marcus, 1955 | | w | latest taxonomic authority | |
| Dugesia evelinae Marcus, 1955 | | w | latest taxonomic authority | |
| Neppia jeanneli (De Beauchamp, 1913) | [with synonyms] | w | other taxonomic work | 19-21 |
| Planaria jeanneli Beauchamp, 1913 | | w | latest taxonomic authority | |
| Euplanaria jeanneli (Beauchamp, 1913) | | w | latest taxonomic authority | |
| Dugesia jeanneli (de Beauchamp, 1913) | | w | latest taxonomic authority | |
| Cura jeanneli (Beauchamp, 1913) | | w | latest taxonomic authority | |
| Cura paeta Marcus, 1955 | | w | other taxonomic work | 24-25 |
| Dugesiidae Cura Strand, 1942 | | w | other taxonomic work | 11-12 |
| Cura foremanii (Girard, 1852) | [with synonyms] | w | other taxonomic work | 12-13 |
| Cura patagonica (Borelli, 1901) | | w | other taxonomic work | 13-14 |
| Cura pinguis (Weiss, 1909) | [with synonyms] | w | other taxonomic work | 14-16, |
| Cura azteca (Benazzi & Giannini, 1971) | | w | other taxonomic work | 16-18 |
| Dugesiidae Neppia Ball, 1974 | | w | other taxonomic work | 18-19 |
| Neppia schubarti (Marcus, 1946) | | w | latest taxonomic authority | 21 |
| Neppia falklandica (Westblad, 1952) | [with synonyms] | w | latest taxonomic authority | 22-23 |
| Planaria ambigua Böhmig, 1902 | [with synonyms] | w | latest taxonomic authority | 28 |
| Curtisia ambigua (Bohmig, 1902) | | w | other taxonomic work | 28 |
| Dugesia ambigua Bohmig, 1902 | | w | latest taxonomic authority | 28 |