Kingdom Fungi R.T.Moore (1980) - fungi
   Phylum Chytridiomycota Doweld (2001)
     Class Chytridiomycetes Moebius (1929)
       Order Nephridiophagales Doweld (2014) [monotypic]
         Family Nephridiophagaceaeᵀ R. Radek, Letcher, Wijayaw., P.M.Kirk & K.D.Hyde (2018)
           Genus Nephridiophagaᵀ Ivanić (1937)
             1 Nephridiophaga blattellae (H. Crawley) P. Woolever
             2 Nephridiophaga maderae R. Radek et al.
             3 Nephridiophaga blaberi Fabel et al.
             4 Nephridiophaga archimandrita R. Radek, Wellmanns & A. Wolf
             5 Nephridiophaga lucihormetica R. Radek, Wellmanns & A. Wolf
             6 Nephridiophaga apisᵀ Ivanić