| author | date | title | journal / publication | Teshirogi W, Hasebe K, Ishida S | 1979 | Karyological studies of the freshwater planarian, genus Polycelis. | Zoological Magazine (Tokyo), 88 (4): 664 |
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| Polycelis (Polycelis) sapporo (Ijima & Kaburaki, 1916) | w | other research on this sp. | ||
| Polycelis schmidti (Zabusov, 1916) | w | other research on this sp. |