| a new coccidian (apicomplexa: eimeriidae), from midland brown snake, storeria dekayi wrightorum trapido (ophidia: colubridae) from arkansas, usa. | a new species of coccidian (protista: apicomplexa: eimeriidae) collected from the faeces of a midland brown snake storeria dekayi wrightorum trapido (ophidia: colubridae) in arkansas, usa, is described. oöcysts of isospora holbrooki n. sp. are subspherical to ovoidal with a smooth, colourless, bi-layered wall, measure on average 27.1 × 24.0 µm, and have a length/width (l/w) ratio of 1.1; both micropyle and oöcyst residuum are absent, but a polar granule is present. sporocysts are ovoidal, 14.8 × ... | 2016 | 26739289 |