S. Mahunka szerk.: Folia Entomologica Hungarica 46/2. (Budapest, 1985)

Domica; 4818/1910 Senohrad; 4836/2025 Plesivec; 4837/2131 Brzotín; 4833/2200 Cicarovce; 4815/ 1807 Ivánka pri Nitre; 4810/1814 Cernfk; 4828/2009 Vefky Blh; 4751/1822 Vojnlce, Chrbát; 4817/ 1824 Nemcifiany; 4812/1825 Cifáre, Pata; 4815/1827 Mochovce; 4750/1818 Mudronovo; 4805/1823 Podhájska, Mariacsalád; 4800/1725 Rohovce; 4802/1718 Samorfn; 4822/2002 Rimavská Sohota, Kurinec (Our unpublished data). Austria: 4810/1620 Wien; 4818/1639 Hainfeld (SMIT, 1955); 4757/1653 Pandorfer Platte; 4745/1647 Illmitz; 4748/1650 Podersdorf (SMIT, 1967); 4810/1620 Wien; 4757/1651 Neusiedl; 4748/ 1652 Podersdorfer Wiese (PEUS, 1969); 4816/1652 Marchegg; 4806/1624 Leopoldsdorf; 4802/1622 Laxenburg; 4805/1621 Biedermannsdorf; 4801/1631 Reisenberg, NSG Fischerwiesen; 4707/1604 Galgenwald, Burgau; 4809/1648 Eckartsau; 4744/1649 Apetlon, Weiss-See (Coll. NHM Wien;

unpublished data). Yugoslavia: 4553/2008 Senta 24.10.1979 7 ê, 15 £; Bogaras 15.07.1983 2 ç; Adahatár 25.07.1983 2 o. ; 4552/1854 Kolut 13.04.1980 1 $; 4505/2006 Indjija, Slank 04.06.1980 1 o; 4515/ 2025 Ecka, Ribnjanci 08.12.1979 2 o; 4517/1948 Nov! Sad - 03.1978 1 o; 4454/2107 Susara 09.08. 1979 1 5, 1 9 leg. M. MIKES (Our unpublished data). Romania: 4653/2250 Bihor Mts; 473 5/22 50 Livada; 4559/2150 Lovrin (SUCIU, 1973). Populations of N. fasciatus within the Pannonian region are related to synathropic rodents (R. norvegicus

, M. musculus) in urban and suburban areas, as well as in native steppes, foreststeppes and agricultural lands. There exists undoubtedly a gene flow within synanthropic and exoanthropic populations of N. fasciatus by the penetrations of synanthropic rodents to natural habitats and opposite trends of hemisynathropic and exoanthropic rodents in some warmer temperate zones. It is evidently a cause of lack of evident morphological differences as to systematic - taxonomic patterns (KIEFER, 1966). It allows also to suppose, there is a remarkable genetical homogeneity as well as the identity of their taxonomical status. A continual distribution of N. fasciatus would be certified for the whole Carpathian-Pannonian region with regard to synathropic populations. Some extreme habitats, like mountain chalets and others are actually due to rodents that are ready tó occupy settlements and buildings in their vicinity. On the other hand, the distribution of exo-anthropic populations of N. fasciatus within the Carpathian hollows is limited by the extent of secondary steppes, e.g. forest-free habitats in lowlands and hollows. This species survives here in rests of alluvial forests, in thermophilous oak woodlands and in open habitats with the exception of permanent wetlands. Attention should be paid to a complementary feature of territorial distribution of N. fasciatus and M. turbidus (see Fig. 2) in the zones, which Pannonian lowland meets particularly on the southern slopes of the Carpathians. The figure shows the points of exo-anthropic occurrence of N. fas ciatus in Czechoslovakia, in which their different relations to habitats are apparent. Due to a continual zone of steppes reaching Pannonian lowland from the southern Europe, the occurrence of N. fasciatus might be considered as native within that area according to primary steppes and foreststeppes (Great Plain). The growing extent of secondary steppes on areas that were woodlands and wetlands originally, during sub-recent periods supported the expansion of this species to zones that were never occupied before. The question, whether the distribution of N. fasciatus was supported by anthropic changes in the ecosystems? or is it a consequence of the restriction of the distribution of M. turbidus with a probability of interspecific competition between the two species mentioned, is open still. Nosopsyllus (Nosopsyllus) mokrzeckyi (Wagner, 1916) Taxonomy: Monotypic species. General distribution: Boreal Mesoeuropean, Mesic Mediterranean, Caucasian Montane and Mesis Montane Central Asian Sector of Palaearctis. Hosts: Mus musculus. occasionally other Muridae, Arvicolidae. Distribution in the Carpathian Basin (Fig. 3): Hungary: 4753/2109 Hortobágy (DUDICH, SZABÓ, 1984). Czechoslovakia: 4820/1720 Maié Traie (Vinosady) (JURÍK, 1962); 4823/1736 Trnava, 4810/1822 Tekovské Luzany (DUDICH, MATOUSEK, 1985). An area of continual distribution of N. mokrzeckyi in Europe is closely related to zone of