Location: Unknown. Oocysts found in feces.
Geographic Distribution: Europe.
Prevalence: Unknown, presumably rare.
Morphology: The oocysts are ellipsoidal, 19 to 27 by 15 to 23 u with a mode of 24 by 19 u. A micropyle is absent. Oocyst polar granules are present. An oocyst residuum is absent. The sporocysts are piriform.
Life Cycle: Unknown.
Remarks: The validity of this species is dubious. It is more likely a parasite of some wild bird, such as I. lacazei of the English sparrow.