microvirgula microvirgula microvirgula is a gram-negative bacteria genus from the family of neisseriaceae. up to now there is only one species of this genus known (microvirgula aerodenitrificans). microvirgula scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: neisseriales family: neisseriaceae genus: microvirgulapatureau et al. 1998 type species microvirgula aerodenitrificans species m. aerodenitrificans