ISOSPORA-NORMANLEVINEI N-SP AND ISOSPORA-COLUZZII N-SP (APICOMPLEXA, EIMERIIDAE) IN EMBERIZA-CIRLUS (CIRL BUNTING) (PASSERIFORMES-EMBERIZIDAE)

The morphological characteristics of two new species of Isospora obser ved in Emberiza cirlus (Cirl Bunting) from Italy are reported. The ooc ysts of Isospora normanlevinei n. sp. are spherical or sub-spherical, with a smooth double-layered wall, and measure 24.2 x 23.7 (21.0-26.5 x 21.5-25.5) mum; each oocyst contains 2 to 10 polar granules. No micr opyle or residuum was observed. The piriform sporocysts measure 19.4 x 11.2 (17.0-21.0 x 10.0-12.5) mum and contain a dispersed residuum. Th e Stieda body is flat; the substiedal body, with scattered clear and d ark granules, may be either symmetrical or asymmetrical. The oocysts o f I. coluzzii n. sp. are asymmetrical and rounded shape and measure 28 .6 x 24.2 (25.0-31.5 x 21.5-26.0) mum. The oocyst has a double-layered wall and 2 to 3 polar granules. Neither micropyle nor residuum is pre sent. The sub-ellipsoidal sporocyst, measuring 18.2 x 10.0 (16.5-20.0 x 9.0-11.0) mum, has a dispersed sporocyst residuum. The Stieda comple x is symmetrical.