| Synonym | Autor | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Echinorhynchus anatis | Gmelin, 1791 | synonym | No | junior synonym |
original combination |
| Echinorhynchus boschadis | Schrank, 1788 | synonym | No | junior synonym |
original combination |
| Echinorhynchus collaris | Schrank, 1792 | synonym | No | junior synonym |
original combination |
| Echinorhynchus minutus | Goeze, 1782 | synonym | No | senior synonym |
original combination |
| Polymorphus boschadis | (Schrank, 1788) | synonym | No | junior synonym |
new combination |
| Polymorphus minutus | (Goeze, 1782) | accepted name | Yes | senior synonym |
new combination |
| Polymorphus polymorphus minutus | (Goeze, 1782) | synonym | No | senior synonym |
new combination |