Dr. Murai Éva szerk.: Parasitologia Hungarica 26. (Budapest, 1993)
the bifid small hooks ranges from 0.032 to 0.037 mm in diameter. Shape of the hooks is more gracile than that of other taeniid hooks parasitizing ruminants (Figs 8 A-H, Tables 1, 2). Musculature of the rostellum and the suckers is hard, condition of the Cysticercus is similar to infective larvae of taeniids. Note: Abuladze (1964) reported on the metacestodes oiTaenia hydatigena Pallas, 1766 and two coenurus larvae (Taenia multiceps Leske, 1780 and T. skrjabini, Popov 1937) from Capra ibex sibirica. According to Verster (1969), the latter species is in synonymy with T. multiceps. Boev et al. (1962) recovered the bladders of coenurus skrjabini (12-15 x 6 cm in size) from a wild goat in Kazakhstan. The above-mentioned two coenurus larvae are different from normal Cysticercus form not only in structure of the metacestodes, but in measurements of the scolex and the hooks compared to T. kotlani. T. skrjabini has 26-34 hooks, the length of the large hooks is 0.151 to 0.167 mm, the total length of the small hooks varies from 0.099 to 0.118 mm. Thus the new taeniid species cannot belong to this group. It is reliably distinguished from T. hydatigena, too (see differential diagnosis and Table 2). Taenia parenchymatosa Pushmenkov, 1945 - metacestodes -from Siberia Metacestodes: Intermediate host is the Siberian roe deer (Capreolus pygargus (Pallas 1771)). C. pygargus is a new intermediate host of this taeniid tapeworm. Locality: Sibiria, Oëk Somon, 50 km north of Irkutsk, 05-09. 10. 1982. No. 4298 HNHM, No. 4299 HNHM, No. 4300 HNHM, legit L. Sugár. Intensity of Cysticercus infection: 15-263 T. parenchymatosa is distributed in the northern tundra region and mountain (alpine) forests of Palearctic. It was separeted from T. krabbei Moniez, 1879 based on the bladder-worms. Pushmenkov (1945), Abuladze (1964) and Brzeskii (1962-1963) published data from the following intermediate hosts: reindeer (Rangifer tarandus (Linnaeus 1758)), reddeer (Cervus elaphus Linnaeus, 1758). Infection of larval taeniids was also high (33 per cent) in the reindeer. Diagnosis: According to our observation bladder worms are 3 to 11 mm (n=75, mean 5.85 mm) in diameter. They are under the surface of the lung as well as in the tissue of the lungs and/or under the visceral pleura of the liver, with a translucent window overlooking the surface. The pear- or worm-shaped metacestodes are found crumpled and freely in the capsule. The forebody, which contains the invaginated scolex, is 1.8 to 2.5 mm in diameter and 2 to 3.5 mm long. Measurements of the caudal bladder range from 2x9 to 6 x 27 mm (n =21, mean 3.57 x 20.67 mm). The cyst is entirely filled with a translucent exudate. A large number of calcareous corpuscles is found in the environment of the scolex. The scolex shows a globular form, 0.750 to 1.100 mm (n=35, mean 0.855 mm) in diameter. The diameter of the rostellum including the hook crown is 0.460 to 0.640 mm (n=32, mean 0.541). The diameter of four muscled suckers is 0.200 to 0.360 mm (n=21, mean 0.270). Rostellum is armed with 27-34 hooks (n=27, mean 30.3, usually 29-30) in 2 circles.
