Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade neomura Cavalier-Smith, 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Subclass Gregarinasina Dufour, 1828
Order Eugregarinorida Léger, 1900
Family Aikinetocystidae Bhatia, 1930
Genus Aikinetocystisᵀ Gates, 1926
Aikinetocystis pontoscolecis (Righi, 1988) Clopton, 1995
Aikinetocystis singularisᵀ Gates, 1926