| Nominal Species (n = 9) | Present allocation (n = 7) | Ref. |
|---|---|---|
| Protoptilum aberrans Kölliker, 1880 | Protoptilum carpenterii | 3477 |
| Protoptilum carpenterii Kölliker, 1872 | Protoptilum carpenterii | 3477 |
| Protoptilum celebense Hickson, 1916 | Protoptilum celebense | 19 |
| Protoptilum cyaneum Kükenthal, 1910 | Protoptilum cyaneum | 19 |
| Protoptilum denticulatum Jungersen, 1904 | Protoptilum denticulatum | 19 |
| Distichoptilum gracile Verrill, 1882 | Distichoptilum gracile | 19 |
| Protoptilum medium Thomson & Henderson, 1905 | Protoptilum carpenterii | 3477 |
| Protoptilum smitti Kölliker, 1872 | Protoptilum smitti | 19 |
| Protoptilum thomsoni Kölliker, 1872 | Protoptilum thomsoni | 19 |