apibacter mensalis apibacter mensalis apibacter mensalis is a bacterium from the genus of apibacter which has been isolated from the gut of bumblebees (bombus lapidarius) from ghent in belgium. apibacter mensalis scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: weeksellaceae genus: apibacter species: a. mensalis binomial name apibacter mensalispraet et al. 2016 type strain lmg 28357