tropicibacter tropicibacter tropicibacter is a genus of bacteria from the family of rhodobacteraceae. tropicibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: tropicibacterharwati et al. 2009 type species tropicibacter naphthalenivorans species t. naphthalenivorans t. phthalicicus