Dr. Murai Éva szerk.: Parasitologia Hungarica 11. (Budapest, 1978)

Host: Umbra krameri. - Locality: swamps in Kiskunság National Park. - Location in the host: gut epithelium and faeces. Remarks: This species resembles Eimeria anguillae Léger and Hollande, 1922, but differs from it by the structure of the Stieda body and by having a polar granule. The species is named after Dr. István MATSKÁSI, parasitologist, research associate in this Institute. 2 iL Fig. 2: Eimeria matskasii sp. n. Eimeria meszarosi sp. n. (Fig. 3) Diagnosis. - Oocyst ellipsoid or spherical, 11. 3 (11. 0-11.5) x 10.8 (10.4-11.0). Cyst wall smooth, colorless, composed of a single very thin layer (~0. 1). Sporocyst moderately compact. Oocyst residuum and micropyle absent, one polar granule of elongated shape, measuring 3x0.5, present. Sporocysts elongated, cylindrical, tapering at the ends, measuring 10. 2 (9. 9-10. 6) x 3. 1 (2.7-3.4). Sporocyst wall 0. 2 thick. Stieda body absent. Four sporocysts arranged lengthwise and usually in the same direction in the oocyst. Each sporocyst with 2 vermiform sporozoites arranged head to tail. One end of the sporozoite reflexed. Measurements of sporozoites (without reflexed portion) 9.4 (9.1-9.7) x 1.2 (1.0-1.5). Each sporozoite possesses an ellipsoidal refractile globule. Sporocyst residuum dispersed, composed of 3-5 coarse granules. Sporulation of the oocyst was completed in the gut of the host. Host: Umbra krameri. - Locality: swamps in Kiskunság National Park. - Location in the host: gut epithelium and faeces. - Host/Infection ratio: 15/12. Remarks: Eimeria meszarosi resembles Eimeria hoffmani, a parasite of Umbra limi in America, but differs from it by the cylindrical shape of its sporocysts, and by presence of an elongated polar granule. This species is named after Dr. Ferenc MÉSZÁROS, parasitologist, Hungarian Natural History Museum, Budapest.