| Petrosia expansa var. aruensis Hentschel, 1912 | Accepted name (WoRMs) |
| Status | senior synonym, original combination |
| ICZN valid name | Yes |
| Status ref. | Hooper, J.N.A., J.A. Kennedy and R.W.M. van Soest, 2000 |
| Comment | |
| Etymology of Generic name | |
| Etymology of specific name |