lacticigenium lacticigenium lacticigenium is a gram-positive, facultatively anaerobic, mesophilic, neutrophilic, non-spore-forming and motile genus of bacteria from the family of carnobacteriaceae with one known species (l. naphthae). lacticigenium scientific classification domain: bacteria phylum: bacillota class: bacilli order: lactobacillales family: carnobacteriaceae genus: lacticigeniumiino et al. 2009 type species lacticigenium naphtae species l. naphthae