Dr. Murai Éva szerk.: Parasitologia Hungarica 13. (Budapest, 1980)
Differential diagnosis: The species Paranoplocephala mascomai sp.n. is the smallest known tapeworm of the genus Paranoplocephala Lühe, 1910 sensu Rausch, 1976. From the •species P. neotomae (Voge, 1946), P. sciur i (Rausch, 1947), P. ondatrae (Rausch, 1948), P. arctica (Rausch, 1950), and P. gracilis Tenora et Murai, 1980 it differs principally by the localisation of the testes. As far as the localisation of testes is concerned, the species P. mascomai is closely related to P. omphalodes (Hermann, 1783) and P. blanchardi (Moniez, 1891). It differs principally from these two by its body size and especially, by a very long vagina (though shorter than cirrus sac) having a mucinose and strongly muscular wall and by the receptaculum seminis having a well developed membrane (not thin-walled). Paranoplocephala mascomai sp. n. is the first helminth species exactly determined as a parasite of Microtus cabrerae (compare in ROCAMORA, MAS-COMA and IBANEZ, 1979). REFERENCES ELLERMANN, J.R. - MORRISON-SCOTT, T.C.S. (1951): Checklist of Palaearctic and Indian Mammals 1758 to 1946. - British Museum, London, pp. 810. RAUSCH, R.L. (1976): The genera Paranoplocephala Lühe, 1910 and Anoplocephaloides Baer, 1923. - Ann. Parasit. Hum, et Comp., 51. 513-562. ROCAMORA, J. M. - MAS-COMA, S. - IBANEZ, J.I. (1979): Analysis comparado de las helmintofaunas de roedores Ibericos del genero Microtus. - II. Congreso Nacional de Parasitologia, León (Spain), 1-4 octobre 1979. - p. 119. SPASSKY, A.A. (1951): Osnovy Cestodologii. I. Anoplocephalaty . - Izd. A. N. S. S. S.R., Moscow, pp. 735. TENORA, F. - MURAI, É. (1980): The genera Anoplocephaloides and Paranoplocephala (Cestoda) parasites of Rodentia in Europe. - Acta Zool. Acad, Sei. Hung. , 2 6. 263-284. Received: 4 March, 1S80 Dr. MURAI, É. Zoological Department of the Hungarian Natural History Museum, H-1088. Budapest , Baross u. 13. Dr. TENORA, F. Zoological Department of the University of Agriculture, CS-662 65. Brno, Zemedelská ul. 1. Dr. ROCAMORA, J.-M. Department of Parasitology, Faculty of Pharmacy, University of Barcelona, Barcelona 28. , Spain
