hymenobacter rigui hymenobacter rigui hymenobacter rigui is a gram-negative, rod-shaped and non-motile bacterium from the genus of hymenobacter which has been isolated from water from the woopo wetland in korea. hymenobacter rigui scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. rigui binomial name hymenobacter riguibaik et al. 2006 type strain imsnu 14116, kctc 12533, nbrc 101118, wpcb131