title: Isospora tiaris n.sp. (Apicomplexa: Eimeriidae) from the sooty grassquit (Tiaris fuliginosa), a passeriform bird of South America.
abstract: Isospora tiaris n. sp. is described from the feces of an adult bird, a sooty grassquit (Tiaris fuliginosa) from Venezuela. The oocysts are subspherical, 27.1 x 23.8 (24.7-30.0 x 21.2-26.5) microns with a bilayered, smooth, colorless wall. A micropyle and oocyst residuum are absent; an ellipsoidal polar granule is usually present. Sporocysts are ovoidal, 14.7 x 10.8 (12.4-16.8 x 8.8-12.4) microns with prominent Stieda and substieda bodies and a residuum composed of small uniform granules.
authors.affiliation: School of Life Sciences, Kingston University, Kingston-upon-Thames, Surrey, U.K.
authors.forename: J
authors.initials: J
authors.lastname: Ball
authors.forename: P
authors.initials: P
authors.lastname: Daszak
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000469:parasitology*; D001717:Birds; D003048:Coccidiosis / Q000469:parasitology / Q000662:veterinary*; D005243:Feces / Q000469:parasitology; D007549:Isospora / Q000145:classification / Q000302:isolation & purification* / Q000648:ultrastructure; D014687:Venezuela