The vulnerable Sporophila frontalis (Verreaux) and Haplospiza unicolor Cabanis as new hosts for Isospora sporophilae Carvalho-Filho, Meireles, Ribeiro & Lopes, 2005 (Eimeriidae) in Brazil.

Isospora sporophilae Carvalho-Filho, Meireles, Ribeiro & Lopes, 2005 was morphologically and molecularly identified from the double-collared seedeater Sporophila frontalis (Verreaux), which is categorised as 'vulnerable' by the International Union for Conservation of Nature and Natural Resources (IUCN), and from the uniform finch Haplospiza unicolor Cabanis in conserved and anthropomorphic/fragmented areas of Atlantic Forest in the southeastern Brazil. The oöcysts recovered from S. frontalis and H.

Isospora sagittulae McQuistion & Capparella, 1992 (Apicomplexa: Eimeriidae) from antbirds (Passeriformes: Thamnophilidae) in the Amazon and Atlantic Forest of Brazil: with notes on its distribution and dispersion in the Neotropical region.

In the current study, Isospora sagittulae McQuistion and Capparella, 1992 (Protozoa: Apicomplexa: Eimeriidae) is reported from white-shouldered fire-eyes Pyriglena leucoptera (Vieillot, 1818) in the Atlantic Forest in southeastern Brazil. To date, this coccidian species was described from antbirds in Ecuador and Brazilian Amazon. In this sense, oocysts and measurements of the description of I.

Isospora lopesi n. sp. (Apicomplexa: Eimeriidae) from the eastern white-throated spadebill Platyrinchus mystaceus Vieillot (Passeriformes: Tyranni: Tyrannidae) in South America.

A species of Isospora Schneider, 1881 (Protozoa: Apicomplexa: Eimeriidae) considered as new to science is described and characterised molecularly from the eastern white-throated spadebill Platyrinchus mystaceus Vieillot in the Parque Nacional do Itatiaia, southeastern Brazil. Isospora lopesi n. sp.