| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cymbactis erythrocephala | Pax, 1922 | synonym | No | senior synonym |
original combination |
| Sicyonis antarctica | Carlgren, 1939 | synonym | No | junior synonym |
original combination |
| Sicyonis aurora | Carlgren & Stephenson, 1929 | synonym | No | junior synonym |
original combination |
| Sicyonis erythrocephala | (Pax, 1922) | accepted name | Yes | senior synonym |
new combination |