Three new coccidian parasites of Brazilian tanager (Ramphocelus bresilius dorsalis) from South America

Three new coccidian (Apicomplexa: Eimeriidae) species are reported from the Brazilian tanager Ramphocelus bresilius dorsalis in Brazil. Oocysts of Isospora tiesangui n. sp. are spherical to sub-spherical, 24.16 x 23.41 mu m with smooth, bi-layered wall, similar to 1.3 mu m and shape-index of 1.0; micropyle, residuum and polar granule all absent. Sporocysts are ovoidal, 17.74 x 11.55 mu m, with both Stieda and substieda body; residuum present and sporozoites with 2 refractiles bodies each. Oocysts of Isospora marambaiensis n. sp. are spherical to sub-spherical, 29.37 x 27.86 mu m, with a smooth, bilayered wall similar to 1.5 mu m and shape-index of 1.0; micropyle, residuum and polar granule all absent. Sporocysts are ellipsoidal, 22.65 x 13.02 mu m, with both Stieda and substieda body; residuum present and sporozoites with 2 refractiles bodies each. Oocysts of Isospora sepetibensis n. sp. are sub-spherical to ellipsoidal, 25.53 x 23.77 mu m, with a smooth, bilayered wall similar to 1.4 mu m and shape-index of 1.1; no micropyle and residuum, and two polar granules are usually present. Sporocyst are ellipsoidal, 16.92 x 11.01 mu m, with both Stieda and substieda body; residuum present and sporozoites with 2 refractiles bodies each.