Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Rozellomycota Doweld (2013)
     Class Microsporidea Corliss & Levine, 1963
       Order Dissociodihaplophasida Sprague, Becnel & Hazard, 1992
         Family Pseudopleistophoridae Sprague, 1977
           1 Genus Pseudopleistophora Sprague, 1977 [monotypic]
           2 Genus Steinhausia Sprague, Ormières & Manier, 1972