Email Post: Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) in the greylag goose (Anser anser Linnaeus, 1758) in southeastern Brazil Tyzzeria parvula (Kotlan, 1933) Klimes, 1963 (Apicomplexa: Eimeriidae) no ganso cinzento (Anser anser Linnaeus, 1758) no sudeste do Brasil