| bacterium secondary symbiont of ultracoelostoma assimile | Yes | no rank | | | species | 1331195 | click here |
| bacteroidetes bacterium endosymbiont of ultracoelostoma brittini | Yes | no rank | | | species | 1331186 | click here |
| bacteroidetes bacterium endosymbiont of ultracoelostoma dracophylli | Yes | no rank | | | species | 1331187 | click here |