Type host: Uroderma magnirostrum (Davis, 1969), Tent-building bat.

Other hosts: None reported to date.

Type locality: SOUTH AMERICA: Bolivia, Santa Cruz, 10 km N of San Ramon, 16º 36' S, 62º 42' W.

Geographic distribution: SOUTH AMERICA: Bolivia, Santa Cruz.

Description of oocyst: Oocyst shape: subspheroidal; number of walls: 2; wall thickness: ~1.5; wall characteristics: outer, yellowish-brown, uniformly mammillated, ~2/3 of total thickness, gives a striated appearance in optical cross-section; inner, smooth; L x W: 23.8 x 20.8 (20-26 x 19-24); L/W ratio: 1.1 (1.0-1.4); M: absent; OR: absent; PG: 1-3, ~2.3 wide. Distinctive features of oocyst: thick, mammillated oocyst wall.

Description of sporocysts and sporozoites: Sporocyst shape: ovoidal; L x W: 11.6 x 8.6 (10-12 x 7-10); L/W ratio: 1.4 (1.1-1.8); SB: present, ~1.3 wide; SSB: present, ~2.6 wide, prominent; PSB: absent; SR: present; SR characteristics: dispersed in center of sporocyst, composed of spheroid globules; SP: with a large, posterior RB. Distinctive features of sporocyst: SSB twice as wide as SB.

Prevalence: 1/2 (50%).

Sporulation: Presumably exogenous. Oocysts sporulated in 2% aqueous (w/v) potassium dichromate solution in the field.

Prepatent and patent periods: Unknown.

Site of infection: Unknown. Oocysts recovered from feces.

Materials deposited: Symbiotype host, U. magnirostrum, deposited in the Museum of SW Biology, UNM, No. 55908 (NK 12988, 8 August 1985). Photosyntypes of the sporulated oocyst in the USNPC No. 88104.

Remarks: Eimeria magnirostrumi is most similar to Eimera macyi Wheat, 1975 from Pipistrellus subflavus from Alabama, USA in that they both have a rough outer wall, have a SB and SSB, and lack an OR. They differ because E. magnirostrumi has a thicker wall (1.5 vs 1.0), has 2 wall layers (vs 1), is somewhat larger (24 x 21 vs 19 x 18), and has a SSB that is twice as wide as its SB, whereas both structures in E. macyi are of equal width.

References: Duszynski et al. (1999); Scott and Duszynski (1997); Wheat (1975).