hymenobacter rubidus hymenobacter rubidus hymenobacter rubidus is a gram-negative, short-rod-shaped and non-motile bacterium from the genus of hymenobacter which has been isolated from soil from seoul on korea. hymenobacter rubidus scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. rubidus binomial name hymenobacter rubiduslee et al. 2016 type strain dg7b, jcm 30008, kctc 32553, kemb 9004-166