title: Isospora celata n. sp. (Apicomplexa: Eimeriidae) from the orange-crowned warbler Oreothlypis celata (Say) (Passeriformes: Parulidae) in Mexico.
abstract: A new coccidian species (Protista: Apicomplexa: Eimeriidae) is described from the orange-crowned warbler Oreothlypis celata (Say) collected in the Nevado de Toluca National Park, Mexico at 3,000 metres above sea level. Isospora celata n. sp. has subspheroidal oöcysts, measuring 28.4 × 26.4 μm, with smooth, bi-layered wall c.1.2 μm thick. Micropyle and polar granule are absent, but oöcyst residuum is present as a compact mass. Sporocysts are ovoidal, 18.2 × 12.8 µm. Stieda body knob-like and sub-Stieda body irregular and barely discernible. Sporocyst residuum is composed of granules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. This is the third description of an isosporoid coccidian infecting a New World warbler.
authors.affiliation: Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro (UFRRJ), BR-465 km 7, 23897-970, Seropédica, RJ, Brazil.
authors.forename: Bruno Pereira
authors.initials: BP
authors.lastname: Berto
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Medina
authors.forename: Celene
authors.initials: C
authors.lastname: Salgado-Miranda
authors.forename: Michele
authors.initials: M
authors.lastname: García-Conejo
authors.forename: Mariusz Krzysztof
authors.initials: MK
authors.lastname: Janczur
authors.forename: Carlos Wilson Gomes
authors.initials: CW
authors.lastname: Lopes
authors.forename: Edgardo
authors.initials: E
authors.lastname: Soriano-Vargas
mesh_terms: D000818:Animals; D007549:Isospora / Q000145:classification* / Q000166:cytology* / Q000302:isolation & purification; D008800:Mexico; D033661:Oocysts / Q000166:cytology; D020308:Songbirds / Q000469:parasitology*; D013045:Species Specificity