Kingdom Fungi R.T.Moore (1980) - fungi Phylum Rozellomycota Doweld (2013) Class Microsporidea Corliss & Levine, 1963 Order Meiodihaplophasida Sprague, Becnel & Hazard, 1992 Family Pereziidae Loubès, Maurand, Comps & Campillo, 1977 Genus Pernicivesicula Bylén & Larsson, 1994 [monotypic] 1 Pernicivesicula gracilisᵀ Bylén & Larsson, 1994