Type species: Idmonea fissurata Busk, 1886
This genus includes the species:
| (Busk, 1886) | Recent | S. Atlantic | WoRMS 472468 | |
| Androsova, 1968 | Recent | Antarctic | WoRMS 472469 | |
| Di Martino & Taylor, 2014 | Neogene Miocene Serravallian | Indonesia Kalimantan | WoRMS 1407185 |