After Parker, 1982

<==o Microspora
   |-- Metchnikovellidae [Rudimicrosporea: Metchnikovellida]
   `--o Microsporea
      |--o Minisporida
      |  |-- Hesseidae
      |  |-- Chytridiopsidae
      |  |-- Burkeidae
      |  `-- Buxtehudeidae
      `--o Microsporida
         |--o Pansporoblastina
         |  |-- Pleistophoridae
         |  |-- Pseudopleistophoridae
         |  |-- Duboscqiidae
         |  |-- Thelohaniidae
         |  |-- Burenellidae
         |  |-- Amblyosporidae
         |  |-- Culicosporidae
         |  |-- Gurleyidae
         |  |-- Telomyxidae
         |  `-- Tuzetiidae
         `--o Apansporoblastina
            |-- Glugeidae
            |-- Spraguidae
            |-- Unikaryonidae
            |-- Pereziidae
            |-- Cougourdellidae
            |-- Caudosporidae
            |-- Nosematidae
            `-- Mrazekiidae

Reference(s):