[Spiriopsis adipophila Arvy and Peters 1972 (=Spirinella edipophila Arvy and Delage 1966), parasite of Ephemeroptera, is a sporozoan].

The occurrence of micronemes and paraglycogen in the cytoplasm of Spiriopsis adipophila (Arvy and Delage 1966) Arvy and Peters 1972, incites us to consider this parasite of Ephemeroptera larvae as the infesting stage of a Sporozoon. It could be in fact a new member of the Barrouxiidae, a family of Coccidia parasitic in Insects and Centipedes which are characterized by the production of monozoic spores.