Dr. Murai Éva - Gubányi András szerk.: Parasitologia Hungarica 27. (Budapest, 1994)
A new geographical record of Petasiger grandivesicularis Ishii, 1935 (Digenea: Echinostomatidae) Aneta KOSTADINOVA 1 and István MATSKÁSI 2 1 Institute of Parasitology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 25. Sofia 1113, Bulgaria Zoological Department, Hungarian Natural History Museum, H-1088 Budapest, Baross u. 13, Hungary (Received 15 September, 1994) Abstract: Two species of Petasiger (Digenea: Echinostomatidae), Petasiger grandivesicularis Ishii, 1935 (new geographical record) and P.neocomense Fuhrmann, 1927 are reported fom grebes in Hungary. The materials are described and depicted. Comparisons with previous documented reports add to the knowledge of the range of intraspecific variation in both species. Key words: Digenea, Echinostomatidae, Petasiger grandivesicularis, P. neocomense, morphology, new geographical record, Hungary. INTRODUCTION Previously, three species of the genus Petasiger (Digenea: Echinostomatidae) have been reported from Hungarian birds: Petasiger megacanthum (=Echinostoma megacanthum Kotlán 1922) from Podiceps eristatus (L.) (Kotlán 1922); P. neocomense (Fuhrmann 1927) from P. cristatus and P. griseigena (Bodd.)(Edelényi 1972) and P. pungens (Linstow 1894) from Tachybaptus ruficollis (Pall.) and P. nigricollis Brehm (Edelényi 1972, Sey 1967). After the redescription of P. grandivesicularis Ishii, 1935 (Kostadinova et al. 1988) and its establishment in naturally infected snails from Bulgaria (Kostadinova and Chipev 1992), a comparative study was carried out on materials of Petasiger spp. deposited in the Helminthological Collection of the Hungarian Natural History Museum. The objective of this paper is to describe the morphology of two Petasiger species from Hungary, P. grandivesicularis and P. neocomense. MATERIALS AND METHODS The study is based on specimens from grebes (Podicipidae) collected in the Hortobágy National Park, in the Kiskunság National Park and in Biharugra. The trematodes
