gillisia myxillae gillisia myxillae gillisia myxillae is a gram-negative, rod-shaped and strictly aerobic bacterium from the genus of gillisia which has been isolated from the sponge myxilla incrustans from friday harbor in the united states. gillisia myxillae scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: gillisia species: g. myxillae binomial name gillisia myxillaelee et al. 2006 type strain ust050418-085