| author | date | title | journal / publication | Beauchamp RSA, Ullyott P | 1932 | abs. | Competitive relationships between certain species of freshwater triclads. | J. Ecol. 20(1): 200-208 |
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| Planaria montenigrina Mrazek, 1904 | w | other research on this sp. | ||
| Planaria gonocephala Duges, 1830 | w | other research on this sp. | ||
| Planaria alpina (Dana, 1766) | w | other research on this sp. | ||
| Polycelis (Polycelis) coronata (Girard, 1891) | [with synonyms] | w | other research on this sp. |