Grassé & Schrével 1953
This family was created by Léger and Duboscq in 1908.
There is one genus in this family - Ophryocystis with at least 10 species.
This is the type family of the order Neogregarinorida.
The trophozoite is conical in shape.
There are two forms of schizont: gregarinoid and mycetoid. The gregarinoid are more common and give rise to gametocytes. The mycetoid give rise to merozoites.
The merozoites are uninucleate, pyriform cells. These are released into the lumen of the tube and from there infect other cells of the tube.
The gametocytes possesses only a single nucleus and are globular in shape. When mature these become detached from the epithelium. Within the lumen the gametocytes associate in pairs, fuse and form a zygote. The zygote subsequently becomes a single octozoic spore.
- Leger L (1907) Les schizogregarines des tracheates. L Le genre Ophryocystis. Arch. Prot. 8: 159-202