halocynthiibacter halocynthiibacter halocynthiibacter is a genus of bacteria in the family rhodobacteraceae. halocynthiibacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: halocynthiibacterkim et al. 2014 type species halocynthiibacter namhaensis species h. arcticus h. namhaensis