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]
         Order Acarosporales V. Reeb, Lutzoni & Cl.Roux (2007)
           1 Family Acarosporaceae Zahlbr. (1906)
           2 Family Eigleraceae Hafellner (1984) [monotypic]