sphingomonas aurantiaca sphingomonas aurantiaca sphingomonas aurantiaca is a gram-negative and psychrotolerant bacteria from the genus of sphingomonas which has been isolated from indoor dusts from animal sheds in finland. sphingomonas aurantiaca scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: sphingomonas binomial name sphingomonas aurantiacabusse et al. 2003 type strain ccug 48749, cip 108368, dsm 14748, lmg 21377, ma101b