tropicimonas arenosa tropicimonas arenosa tropicimonas arenosa is a gram-negative, aerobic, rod-shaped and non-motile bacterium from the genus of tropicimonas which has been isolated from sand from the jeju island in korea. tropicimonas arenosa scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: tropicimonas species: t. arenosa binomial name tropicimonas arenosaoh et al. 2016 type strain kctc 52178, nbrc 111995