Idmidronea species a.Type species: Idmonea maxillaris Lonsdale, 1845
The assignment of species to Idmidronea or Exidmonea is uncertain in many cases, until revision is attempted.
This genus includes the species:
| Idmidronea africana | Brood, 1977 | Recent | W. Africa |
| Idmidronea antarctica | Borg, 1944 | Recent | Antarctic |
| Idmidronea atlantica | (Forbes in Johnston, 1847) | Recent | N. Atlantic |
| Idmidronea australis | (MacGillivray, 1882) | Recent | Australia |
| Idmidronea bassleri | Buge, 1948 | Tertiary | France |
| Idmidronea fraudulenta | Ostrovsky & Taylor 1996 | Recent | Antarctic |
| Idmidronea maxillaris | (Lonsdale, 1845) | Tertiary (Eocene) | USA (N.Carolina, S.Carolina) |
| Idmidronea obtecta | Borg, 1944 | Recent | Antarctic |
| Idmidronea pellucida | Ostrovsky & Taylor 1996 | Recent | Antarctic |
| Idmidronea pseudocrisina | Borg, 1944 | Recent | Antarctic |
| Idmidronea traceyi | Taylor & McKinney, 2006 | Cretaceous Maastrichtian-Campanian | USA east |
(Many more species yet to be added)
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