| Kenkiidae Sphalloplana de Beauchamp, 1931 | | w | latest taxonomic authority | |
| Sphalloplana Polypharyngea Carpenter, 1971 | | w | other taxonomic work | |
| Sphalloplana Speophila Hyman, 1937 | [with synonyms] | w | other taxonomic work | |
| Sphalloplana (Speophila) buchanani Hyman, 1937 | [with synonyms] | w | latest taxonomic authority | 17 |
| Sphalloplana (Speophila) hubrichti Hyman, 1945 | | w | latest taxonomic authority | 20-21 |
| Sphalloplana alabamensis Hyman, 1945 | | w | latest taxonomic authority | |
| Sphalloplana buchanani Hyman, 1937 | | w | latest taxonomic authority | 17 |
| Sphalloplana (Sphalloplana) georgiana Hyman, 1954 | | w | other taxonomic work | 3-5 |
| Sphalloplana (Sphalloplana) hoffmasteri (Hyman, 1954) | | w | latest taxonomic authority | |
| Sphalloplana kutscheri Mitchell, 1968 | | w | latest taxonomic authority | |
| Sphalloplana mohri Hyman, 1938 | | w | latest taxonomic authority | 23-24 |
| Sphalloplana (Sphalloplana) percoeca (Packard, 1879) | [with synonyms] | w | other taxonomic work | 3-5 |
| Sphalloplana virginiana Hyman, 1945 | | - | other taxonomic work | 14 |
| Sphalloplana (Speophila) weingartneri Kenk, 1970 | [with synonyms] | w | latest taxonomic authority | 17 |
| Dugesiidae Spathula Nurse, 1950 | | w | latest taxonomic authority | |
| Hymanella retenuova Castle, 1941 | | w | other taxonomic work | |
| Phagocata vernalis Kenk, 1944 | [with synonyms] | w | latest taxonomic authority | |
| Sphalloplana percoeca (Packard, 1879) | | - | other taxonomic work | 3 |
| Sphalloplana (Speophila) chandleri Kenk, 1977 | | w | primary taxonomic authority (describer) | 21-23 |
| Sphalloplana (Sphalloplana) californica Kenk, 1977 | | w | primary taxonomic authority (describer) | 8-10, figs, |
| Sphalloplana (Sphalloplana) consimilis Kenk, 1977 | | w | primary taxonomic authority (describer) | 11-12 |
| Sphalloplana (Sphalloplana) culveri Kenk, 1977 | | w | primary taxonomic authority (describer) | 10-11 |
| Sphalloplana (Sphalloplana) evaginata Kenk, 1977 | | w | primary taxonomic authority (describer) | 6-8 |
| Sphalloplana (Speophila) holsingeri Kenk, 1977 | | w | primary taxonomic authority (describer) | 14-17 |
| Sphalloplana (Sphalloplana) subtilis Kenk, 1977 | | w | primary taxonomic authority (describer) | 12-14 |
| Phagocata virilis Kenk, 1977 | | w | primary taxonomic authority (describer) | |
| Sphalloplana (Sphalloplana) kansensis Hyman, 1945 | | w | other taxonomic work | 8 |
| Sphalloplana (Speophila) pricei Hyman, 1937 | | w | other taxonomic work | 18-20 |
| Fonticola percoecum (Packard, 1879) | | w | other taxonomic work | 3-5 |
| Dendrocoelum percoecum Packard, 1879 | | w | other taxonomic work | 3-5 |
| Sphalloplana (Polypharyngea) mohri (Hyman, 1938) | | w | other taxonomic work | 23-24 |
| Planarioidea Dendrocoelidae Hallez, 1892 | | w | other taxonomic work | |
