| Nominal Species (n = 9) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Necturus alabamensis Viosca, 1937 | Necturus alabamensis | 19 |
| Necturus beyeri Viosca, 1937 | Necturus beyeri | 19 |
| Necturus lewisi Brimley, 1924 | Necturus lewisi | 19 |
| Necturus lodingi Viosca, 1937 | Necturus alabamensis | 75097 |
| Necturus louisianensis Viosca, 1938 | Necturus maculosus | 75097 |
| Necturus maculatus Rafinesque, 1819 | Necturus maculosus | 75097 |
| Sirena maculosa Rafinesque, 1818 | Necturus maculosus | 75097 |
| Siren maculosus Rafinesque, 1818 | Necturus maculosus | 75097 |
| Menobranchus punctatus Gibbes, 1850 | Necturus punctatus | 75097 |