| new species of eimeria schneider, 1875 and isospora schneider, 1881 (apicomplexa: eimeriidae) from the short-crested flycatcher myiarchus ferox (gmelin) (passeriformes: tyrannidae) in south america. | in the current study, two new coccidian species (protozoa: apicomplexa: eimeriidae) obtained from short-crested flycatcher myiarchus ferox (gmelin) are reported from brazil. isospora feroxis n. sp. has oöcysts which are spheroidal to sub-spheroidal, 18.7 x 18.0 microm, with a smooth and bi-layered wall, c. 1.2 microm. the micropyle and oöcyst residuum are absent, but two polar granules are present. its sporocysts are broadly ellipsoidal and 11.7 x 8.5 microm. stieda and substieda bodies are pres ... | 2009 | 19633934 |