Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Rozellomycota Doweld (2013)
     Class Microsporidea Corliss & Levine, 1963
       Family Berwaldiidae Simakova, Tokarev & Issi, 2018, incertae sedis
         Genus Fibrillanosema Galbreath, Smith, Terry, Becnel & Dunn, 2004
           Fibrillanosema crangonycisᵀ Galbreath, Smith, Terry, Becnel & Dunn, 2004