Phylum Ascomycota Caval.-Sm. (1998) - sac fungi
   Subphylum Pezizomycotina O.E. Erikss. & Winka (1997)
     Class Pezizomycetes O.E. Erikss. & Winka (1997) [monotypic]
       Order Pezizales J.Schröt. (1894)
         Family Otideaceae Eckblad (1968)
           1 Genus Acervus Kanouse (1938)
           2 Genus Arpinia Berthet (1974)
           3 Genus Ascosparassis Kobayasi (1960)
           4 Genus Diehliomyces Gilkey (1955)
           5 Genus Monascella Guarro & Arx (1986)
           6 Genus Otidea (Pers.) Bonord. (1851)
           7 Genus Warcupia Paden & J.V. Cameron (1972)
           8 Genus Wenyingia Zheng Wang & Pfister (2001)