| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Arcobacter defluvii | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter cryaerophilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter cloacae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter cibarius | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter canalis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter caeni | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter butzleri | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter bivalviorum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter aquimarinus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter anaerophilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter acticola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcobacteraceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Campylobacterales | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Epsilonproteobacteria | ||||
| Arcicella rosea | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcicella rigui | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcicella aurantiaca | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcicella aquatica T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arcicella | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Spirosomataceae | ||||
| Archangium violaceum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archangium minus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archangium gephyra T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archangium disciforme | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archangiaceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archangium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archaeoglobus veneficus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archaeoglobus sulfaticallidus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Archaeoglobus profundus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |