Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Lecanoromycetes O.E. Erikss. & Winka (1997)
       Subclass Acarosporomycetidae V. Reeb, Lutzoni & Cl.Roux (2004) [monotypic]
         1 Order Acarosporales V. Reeb, Lutzoni & Cl.Roux (2007)