Type host: Nyctalus noctula (Schreber, 1774), Noctula bat.

Other hosts: None reported to date.

Type locality: EUROPE: Czechoslovakia, Srbsko near Prague.

Geographic distribution: EUROPE: Czechoslovakia.

Description of oocyst: Oocyst shape: spheroidal to subspheroidal; number of walls: 1?; wall thickness: ~1.0-1.5; wall characteristics: seen as a "doubly outlined membrane," smooth; L x W: 18.0 (16-20) spheroidal forms; 21.0 18.0 (19-22 x 17-20) subspheroidal forms; L/W ratio: 1.0-1.2; M: absent; OR: absent; PG: 1. Distinctive features of oocyst: snooth wall and lacking OR.

Description of sporocysts and sporozoites: Sporocyst shape: elongate ovoidal; L x W: 8-10 x 4-5; L/W ratio: not given; SB: present, small; SSB: absent; PSB: absent; SR: present; SR characteristics: granular, spheroidal, 3.5 wide, may be membrane-bound; SP: banana-shaped with 1 RB at rounded end. Distinctive features of sporocyst: small SB and membrane-bound SR.

Prevalence: 1/1 (100%).

Sporulation: Presumably exogenous. "Oocysts from the intestine of the bat were left to sporulate in 1.5% aqueous (w/v) potassium dichromate solution," but the time and temperature were not stated.

Prepatent and patent periods: Unknown.

Site of infection: Epithelial cells throughout the length of the (small?) intestine.

Endogenous stages: Meronts were 11 x 10 and had 3 (?) sickle-shaped merozoites that were 8-9 x 2. Microgametocytes were ovoidal, 11-13 x 8-10 and contained 30-40 microgametes each. Macrogametocytes were spheroidal, ~10, or ovoidal, 11-13 x 8-11, with a large (4 x 3.5) nucleus containing a large nucleolus.

Materials deposited: None.

Remarks: Meronts reproduce asexually by multiple events of binary fission, which ought to result (generally) in even numbers of merozoites. Thus, it seems unusual to have a meront with only three merozoites. This species has not been seen since its original description.

References: Cerná (1976).