lutibacter citreus lutibacter citreus lutibacter citreus is a gram-negative, aerobic, rod-shaped and non-motile bacterium from the genus of lutibacter which has been isolated from surface sediments from the arctic. lutibacter citreus scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: lutibacter species: l. citreus binomial name lutibacter citreusdu et al. 2020 type strain 1kv19