| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Arthrobacter humicola | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter halodurans | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter gyeryongensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter globiformis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter glacialis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter ginkgonis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter gandavensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter flavus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter echini | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter deserti | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter cupressi | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter crystallopoietes | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter cryoconiti | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter citreus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter celericrescens | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter castelli | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter bussei | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter bambusae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter alpinus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter alkaliphilus | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter agilis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arthrobacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsukibacterium ikkense T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsukibacterium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsenophonus nasoniae T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsenophonus | ||||
| Morganellaceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsenicitalea aurantiaca T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Arsenicitalea | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Devosiaceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |