| a new species of caryospora (apicomplexa: eimeriidae) from the flathead snake, tantilla gracilis (ophidia: colubridae), in southeastern oklahoma. | a single flathead snake, tantilla gracilis , collected in early october 2010 from choctaw county, oklahoma, was found to harbor an undescribed species of caryospora . oocysts of caryospora choctawensis n. sp. were spherical to subspherical, 15.8 × 15.0 (14-18 × 14-16) µm, with a thick, bilayered wall and a shape index (length∶width) of 1.1. a micropyle and an oocyst residuum were absent, but prominent stieda and bubble-like sub-stieda bodies were present as well as a bilobed polar granule near t ... | 2012 | 22191621 |