Dr. Murai Éva szerk.: Parasitologia Hungarica 12. (Budapest, 1979)
7. Hirstionyssus isabellinus (Oudemans, 1913) It is a typical parasite of hosts from the genera Microtus, Pitymys, Clethrionomys and Arvicola, and Lemnus in northern Europe and in the Soviet Union. Although in our acarological material H. isabellinus was presented only with one specimen, it belongs to the dominant species of the genus Hirstionyssus in Europe. With regard to the public health it may be of importance in the natural foci of lymphocytary choriomeningitis (GUSEV, 1955), haemorrhagic nephroso-nephritis (CHUMAKOV et al. 1956), tick spotted fever (KORCHUNOVA and P ION TKO VSKAY A , 1954) and tularemia (FRANCIS and LAKE, 1922; NELZINA and BARKOV, 1951; NELZINA and ROMANOVA, 1951; NELZINA and LIPEC 1952; NELZINA et al. 19 57, etc. ). It is reported from Hungary by MAHUNKA and MOLNOS (1962). 8. Hirstionyssus latiscutatus de Meillon et Lavoupierre, 1944 It is a typical parasite of the rodent genera Apodemus, Mus and Microtus; it occurs rarely on other smaU mammals. It is as widely distributed in Europe as its hosts. It is known as a long-term reservoir and potential vector of tularemia and haemorrhagic nephroso-nephritis (KORCHUNOVA, 19 54). 9. Eulaelaps stabularis (C. L. Koch, 1836) It is a parasite of wide host-range. Abundant findings of this species in the territory of Hungary are noted by BALOGH (1955) which also indicates its frequency on the rodent genera Apodemus, Clethrionomys and Rattus. Usually it is abundant in the nest-acarofauna of small mammals. E. stabularis is characterized with wide ecological valency. It may be important in the natural foci of tick-borne encephalitis and lymphocytary choriomeningitis (GHILMANOVA, BOIKO and LAPCHINA, 1964). 10. Haemogamasus pontiger (Berlese, 1904) The finding of one female in our acarological material corresponds to the rare occurrence of this species in the coats and nests of small subterranean mammals in Central Europe; Some authors consider it as synanthropic mite living in wall-papered furniture and in straw mattress. It is also able to infest humans and cause dermatitis. 11. Haemogamasus nidi Michael, 1892 It is the most abundant species of genus Haemogamasus living on small subterranean mammals and in their nest in Europe. It has a very wide host range. Its systematical position was, up to now, unclear and by some authors changed for Haemogamasus ambuláns (Thorel, 1872) and under this name was probably reported by BALOGH (1955), MAHUNKA and MOLNOS (1962) from Hungarian territory. However, H. ambuláns is a specific parasite of Microtus oeconomus and this vole in the author' s catch was not noted, this finding attributed to H. nidi , whose systematical position was clarified by MRCIAK (1963). Haemogamasus nidi belongs to the mites which have an epidemiological and public health bearing as an indicator and vector of pathoergonts, lymphocytary choriomeningitis and haemorrhagic nephroso-nephritis (BREGETOVA, 1965). 12. Haemogamasus hirsutus Berlese, 1889 It is a parasitic mite infesting many species of rodents and insectivores. It occurs also in their nests in the whole of Europe. Its role in the natural foci of infection is not clear at present. 13. Haemogamasus hirsutosimilis Willmann, 1952 It is a parasitic mite, infesting many species of small subterranean mammals especially from the genus Apodemus. It is localized in Central and Northern Europe prevalently in'lowland areas. Conversely, in Southern Europe it occurs frequently in the high elevations in mountains of Yugoslavia, Bulgaria, Greece, Albania (MRCIAK, 1959, 1960, 1974; MRCIAK and BRELICH 1972). It was previously reported from Hungary by MAHUNKA and MOLNOS (1962).
