Dr. Murai Éva szerk.: Parasitologia Hungarica 26. (Budapest, 1993)

cladotiridium, strobilocercus etc.). After taxonomic revision by Esch and Self (1965), Verster (1969), Rausch (1985) and Schmidt (1986) the following two genera can be established in the subfamily Taeniinae: Taenia Linnaeus, 1758 and Insinaurotaenia Spassky, 1948. Species of the genus Taenia exhibit a high degree of uniformity in the strobilar stage, and their larval stages are morphologically rather diverse, but all can be defined as a Cysticercus or some modification thereof (Rausch 1985, Rausch and Fay 1988). At the same time the genera Multiceps Goeze, 1782, Taeniarhynchus Weinland, 1858, Hydatigera Lamarck, 1861, Tetratirotaenia Abuladze, 1964 and Fossor Honess, 1937 have been placed in synonymy with Taenia. The genus Cladotaenia Cohn, 1901 and its synonymy (Paracladotaenia Yamaguti, 1935), as well as the genus Anoplotaenia Beddard, 1911 and Dasyurotaenia Beddard, 1912 have been shut out from the family Taeniidae. The genus Alveococcus Abuladze, 1960 has been replaced by the genus Echinococcus Rudolphi, 1801 in the subfamily Echinococcinae. Movsessian (1989) supported the view of Abuladze (1964) considering the independence of the genera have been assigned to the subfamilies Taeniinae Perrier, 1897 and Echinococcinae Abuladze, 1960. Murai et aL (1989) tried to verify the validity of the genus Hydaügera Lamarck, 1861. Edwards and Herbert (1981) published an identification table on the examination of the scolex organelles and the length of the hooks for T. hydatigena, T. multiceps (adult and metacestode), T. ovis and T. pisiformis. However, it is only useful for the knowledge of morphological conditions of the mature proglottid. In general, characterization of the hooks of taeniid tapeworms is based on the number and the linear dimension of the hooks and their shape as well. Exclusive use of line dimension can yield serious misidentification, because the hooks of T. hydatigena, T. crassiceps and T. mortis group, T. polyacantha, respectively, show the same size. On the other hand, the drawings reflect subjectivity; moreover, they are deformed by the defect of drawing-instruments. Different measurements have been suggested for the characterization of hooks. Baer (1926) indicated the basis length besides the linear measurements. Dollfus (1959) used the total length, the blade length and the basis length, respectively, the distance between picks of the guard and the blade as well. Freeman (1959) introduced the guard index (the total length of the hook divided by the maximum width measured at height of the guard) for discrimination of the larval hooks of the families Cladotaenia and Paruterina. Rausch and Allessandro (1978) applied with good results the blade index for the separation of larvae of different Echinococcus species. In the framework of an UNESCO project entitled "Man and biosphere" Mongolian ibex (Capra ibexsibirica Pallas, 1776) and Siberian roe deer (Capreoluspygargus (Pallas 1771)) were investigated from the parasitological point of view. A larval Taenia infection was revealed for both intermediate host species under the visceral pleura on the surface of the lungs. The aim of this study was to describe the recovered metacestodes, and to clarify the taxonomic relationship of species which are closely related to these metacestodes.