Kingdom Protoctista Hogg, 1860 Phylum Microspora Sprague, 1977 - microsporans see Phylum Microsporida Balbiani, 1882 Class Microsporea Levine & Corliss, 1963 see Class Microsporidea Corliss & Levine, 1963 Order Microsporida Balbiani, 1882 Suborder Apansporoblastina Tuzet et al., 1971 Family Nosematidae Labbé, 1899 Genus Ichthyosporidium Caullery & Mesnil, 1905