L. Forró - É. Murai szerk.: Miscellanea Zoologica Hungarica 5. 1989 (Budapest, 1989)

Murai, É., Tenora, F.; StanÄ›k, M.: Atypical strobilocercus (Cestoda: Taeniidae) – a parasite in experimental stocks of Ondatra zibethicus (Rodentia)

Among others SLAIS (1973) studied the larval development of H. krepkogorski in Rhom- bomys opimus (Lichtenstein, 1823). He presented photographs of "the scoleces growing on the bladder surface showing similarity to the strobilocercus", and observed that in "the early development of the uninvaginated scoleces occurring as rapidly as the strobilocercus of T. taeniaeformis" (Figs 14 and 15). In T. parva there are 17-21 pseudosegmented branches, 10-20 mm in length, they grow from a round common basis, and have scoleces evaginated with hooks which are identical to that of adult worms from the definitive host Genetta and Herpestes spp. (Viverridae). The morphology of T. parva metacestodes in the European population were studied by MASCOMA and FELIU (1977) in the intermediate host Apodemus sylvaticus Linné, 1758. (Fig. 13). The locations of T. parva cysticerci in Southern and South-Eastern France and in the Iberian Peninsula are the same as that of Genetta genetta (Linné, 1758). So the whole life cycle of this species is possible in these regions. The rostellar hooks of the type specimens deposited in the Natural History Museum of Geneva, and that of the larvae are similar morphology. From the courtesy of Professor VAUCHER we have the possibility to study and to show the morphology of their rostellar hooks (Figs 11 and 12). The newest finding related to taeniid with pseudosegmented metacestodes erected from Malaysian Rattus spp. (KAMIYA et al. 1987). The metacestodes was placed in the thoracic or peritoneal cavity, as well as in the subcutaneous tissue and in muscles. In this Taenia s. 1. species each cyst possesses a pair strobilocercus-like metacestodes, arising from the cyst-wall. The scoleces are evaginated and the rostellar hooks are of characteristic shape, related to Hydatigera species (Figs 16 to 18). The definitive host of this species is unknown. The experimental infestation of Feli s catus was unsuccessful. TAXONOMIC REMARKS We used the nomenclatural order of ABULADZE (1964), however SCHMIDT (CRC Handbook of tapeworm identification 1986) did not accept the genus Hydatigera Lamarck, 1816, where species belong whose development goes through a strobilocercus state. The type species of the genus Hydatigera Lamarck is H. taeniaeformis (Batsch, 1786). We investigated the teratologic cases (named "polystrobilocercus") of larval H. taeniaefor

mis, and the postoncospheral development of Taenia parva Baer, 1925, Hydatigera kr

epkogorski (Schulz et Landa, 1934) and Taenia sp. Kamiya et al., 1987. Since all these species have metacestodes from strobilocercus type, a specific relationship in this group is proved, which could be accepted at generic level. REFERENCES ABULADZE, K.I. (1964): Taeniata of animals and man diseases caused by them. (In Russian! - Osnovy Cestodologii, Publ. House Nauka, Moscow, 4: 239-267 (spec, pp.) AGAPOVA, A, (1950): A new type of larval cestode structure. (In Russian.! - Izv. Akad. Nauk kazakh. SSR, 8: 242-245. BAER, J.G. 1925): Contributions to the helminth-fauna of South Africa. - 11th and 12th Rëpt Director Veterin. Educat. and Res. Pretoria, pp. 79. BERNARD, J. (1959!: Note a propos d'une larve anormale de Taenia taeniaeformis Batsch. Parasitica, 15_: 77-81. BERNARD, J. (I960!: Sur trois cas de Cysticercose grave chez des campagnols (RodentiaMicrotidael. - Annls Parasit, hum. comp., 35: 243-250. BERNARD, J. (1963): Cysticerques polycephales chez le mulot. - Archs Ins. Pasteur Tunis, 40: 269-277. DOLLFUS, R. P. (1953): Nouvelles récoltes de cystiques polycephales chez des Meriones: M. crassus Sundevall, 1842; M. lybicus erythrourus P. E. Gray, 1842; M. persicus (Blanford, 1875). - Miscnea helm. Maroc, 9: 518-532. DOLLFUS, R. P. (1962!: Sur un Taenia d'Herpestes ichneumon L. d'Algérie: Hydatigera laticollis (Rudolphi, 1810) forma parva (J. G. Baer, 1925). - Archs Inst. Pasteur Alger, 40; 387-393.