tetrasphaera australiensis tetrasphaera australiensis tetrasphaera australiensis is a gram-positive bacterium species from the genus tetrasphaera which has been isolated from activated sludge from glenelg in australia. tetrasphaera australiensis scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: tetrasphaera species: t. australiensis binomial name tetrasphaera australiensismaszenan et al. 2000 type strain acm 5117ben 109dsm 12890glenelgiam 14901jcm 21391nbrc 103087