| morphological data of calyptospora spinosa n. sp. (apicomplexa, calyptosporidae) parasite of crenicichla lepidota heckel, 1840 (teleostei) from amazon river. | a new coccidian species, calyptospora spinosa (fam. calytosporidae) is described from liver, testis and ovary tissue of a freshwater fish, crenicichla lepidota, from the lower amazon river near belém, brazil, where it causes great mortality. each oocyst contains four ellipsoidal sporocysts, each one surrounded by a membranous veil. each sporocyst, containing two sporozoites, has an apical sporopodium possessing several lateral sporopodium projections. these sporocysts differ from those of the fo ... | 1993 | 23195539 |