| Nominal Species (n = 3) | Present allocation (n = 1) | Ref. |
|---|---|---|
| Icosteus aenigmaticus Lockington, 1880 | Icosteus aenigmaticus | 50277 |
| Schedophilopsis spinosus Steindachner, 1881 | Icosteus aenigmaticus | 50277 |
| Acrotus willoughbyi Bean, 1888 | Icosteus aenigmaticus | 50277 |