| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Yaniella flava | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yaniella fodinae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Yaniella halotolerans T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yaniella soli | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yaniellaceae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yeosuana | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yeosuana aromativorans T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yeosuana marina | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia aldovae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia aleksiciae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia alsatica | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia artesiana | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia bercovieri | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia canariae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia enterocolitica | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia enterocolitica subsp. enterocolitica | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia enterocolitica subsp. palearctica | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia entomophaga | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia fenwicki | Unknown | Valid (ICNP) | Excubia bot 6 months ago | |
| Yersinia frederiksenii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia hibernica | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia intermedia | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia kristensenii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia kristensenii subsp. kristensenii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia kristensenii subsp. rochesterensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Yersinia massiliensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia mollaretii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia nurmii | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Yersinia occitanica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |