Rasajeyna is a genus of parasitic alveolates in the phylum Apicomplexa. This genus has been little studied and not much is known about these protozoa.
This genus was created in 1977 by Beesley.[1]
There is one species in this genus, Rasajeyna nannyla.
These protozoa infect the midgut of Tipula species (craneflies).
They are transmitted by the orofaecal route.
The oocyst is somewhat unusual with a double layered wall which surrounds up to 18 sporocysts. Each sporocyst contain only a single sporozoite.