larkinella larkinella larkinella is a gram-negative, chemoorganotrophic and strictly aerobic bacterial genus from the family of spirosomaceae. larkinella scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: spirosomaceae genus: larkinellavancanneyt et al. 2006 type species larkinella insperata species l. arboricola l. bovis l. harenae l. insperata l. knui l. ripae l. rosea l. soli