mycobacterium arosiense mycobacterium arosiense mycobacterium arosiense is a newly described species of mycobacterium. it is a scotochromogen that derives its name from arosia, the latin name for the city of aarhus (denmark), where the strain was first isolated. mycobacterium arosiense scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: mycobacteriaceae genus: mycobacterium it can be misidentified as mycobacterium intracellulare by the commercial mycobacterium assay system, genotype ® (hein, nehren, germany). it can cause osteomyelitis and lung disease.