| Nominal Species (n = 8) | Present allocation (n = 8) | Ref. |
|---|---|---|
| Octocanna aphrodite Bigelow, 1919 | Octophialucium aphrodite | 2992 |
| Octophialucium bigelowi Kramp, 1955 | Octophialucium bigelowi | 19 |
| Octophialucium indicum Kramp, 1958 | Octophialucium indicum | 19 |
| Octophialucium irregularis Schuchert & Collins, 2021 | Octophialucium irregularis | 3477 |
| Octophialucium krampi Bouillon, 1984 | Octophialucium krampi | 3125 |
| Octophialucium medium Kramp, 1955 | Octophialucium medium | 19 |
| Octophialucium mollis Bouillon, 1984 | Octophialucium mollis | 3125 |
| Malagazzia monocanalis Unspecified | Malagazzia monocanalis | 78043 |