S. Mahunka szerk.: Folia Entomologica Hungarica 63. (Budapest, 2002)

dae 1, Cerococcidae 1, and Diaspididae 14. Four earlier reported wide-spread pest species were not found in this survey. The number of collected species (54) is very high, including several rare species, for a small territory in the middle of a big town. This species richness is comparable to those found in great National Parks, such as the Kiskunság National Park (55) (Kozár & Walter 1986), the Bükk National Park (59) (Kozár & Drozdják 1990), or the Pilis Biosphere Reservation (83) (Kozár 1990), but much higher than richness in the Hortobágy National Park (10) (which was not intensively studied), the Bátorliget Nature Reserve (30) (Kozár & Drozdják 1990), or the Fertő-Hanság National Park (39) (Kozár & Konczné 2002). From the studied plant localities Brometum (having more diverse plant community) harboured the highest number of species (21), in Seslerietum, Caricetum, and Pulsatilletum the species number was medium (10, 12, 15, respectively), In Festucetum only four species were collected. This place on dry rocks had very few plant species. From the collecting methods DVAC and visual survey yielded about the same high number of species. The pitfall traps collected only 7 species, however among them there were three species not collected by the other methods. This means, that for quick and more complex exploration of a given territory, it is necessary to use a combination of methods, even such methods, which are usually not used by coccidologists, as it was mentioned by Kozár & Miller (2001), too. The Sas-hegy Nature Reserve Area could be characterised by the presence of a high number of rare xerophilous species as: Coccidohystrix samui, Eumirococcus borchsenii, Mirococcopsis avetianae, Lecanopsis subterranea, Rhizopulvinaria spinifera, Scythia craniumequinum, Acanthomytilusjablonowski, Chortinaspis subterraneus (this species was found first by G. Bálás in 1954 and collected by us in 1998, but we could not find it in other parts of Hungary), Quadraspidiotus labiatarum, and Asterobemisia paveli. But some mesophilous species like Acanthococcus baldonensis, Greenisca erwini, Mohelnaspis massiliensis are present too. According to our present knowledge we cannot name any typical indicator species, because most of the species mentioned here were found also in other xerophilous, carstic places of Hungary