hymenobacter tenuis hymenobacter tenuis hymenobacter tenuis is a gram-negative and aerobic bacterium from the genus of hymenobacter which has been isolated from a wastewater treatment plant from korea. hymenobacter tenuis scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: hymenobacteraceae genus: hymenobacter species: h. tenuis binomial name hymenobacter tenuiskang et al. 2017 type strain jcm 31659, kctc 52271, strain pob6