Dr. Murai Éva szerk.: Parasitologia Hungarica 25. (Budapest, 1992)

Bükk National Park: Miskolc, Garadna-patak völgye (below coded with B): 200-300 m upstream the Hámori lake; Börzsöny Landscape Protection Area: Verőcemaros (changed to Verőce during the period of collectings), Magyarkút, Keskenybükki-patak völgye (below coded with M): just outside the settlement; Pilis Landscape Protection Area: Visegrád, Apátkúti-völgy (below coded with V): 150 m upstream of the hunters'-seat. When coding the samples, a letter for the site and five numbers for day (2), month (2) and year (1) were used, e.g. A11090 is for the Aggtelek site on the 11th of September, 1990. Human faeces was put under Gregor-Povolny's traps. Fresh or one to two hour old human faeces was used. Exposure time was mostly four hours in 1988, three hours in 1989-1990. The soil temperature at a depth of 5 cm, the air temperature on the ground and the wind speed were always measured. (Not with the purpose of finding any correlation between capture results and the meteorological data but in cases when we captured less than expected, in that way we had a slight chance to find the reasons.) Trapping sites were shady (mostly grassy) places at a short distance from a creek; we placed traps to the same spot/site for three years. In 1988 9 samples were collected, in 1989 11 samples, in 1990 9 samples (two samples from 1990 were left unidentified for lack of time). Nine A samples, eight B samples, seven M samples and five V samples were collected. These dipterous materials served as sources to judge the species richness at the given site and the composition of the dipterous assemblages. A total of 9,191 dipterous specimens of 29 samples were identified. The specimens were identified by the identification books of Mihályi (1975), Papp (1973) and others. For the families Fanniidae and Muscidae the taxonomical sequence and nomenclature follows the catalogue of Pont (1986). When analysing the samples, the Shannon-Wiener index (polynomial entropy), or evenness index were not used (as in studies on drosophilids), as we thought that the samples taken were not representative enough to support an opportunity for comparison. For some groups the Jaccard index (species identity index) was calculated. Only the number of specimens, the number of species represented, and the number of species per collecting site were summarized in the tables. RESULTS The results are summarized in Tables 1 and 2. To avoid even larger tables, only the commoner species and all the species of the families of calyptrate flies (Scathophagidae, Anthomyiidae, Fanniidae, Muscidae, Calliphoridae, Sarcophagidae) are included in the tables. We collected comparatively numerous materials of assemblages rich in species. There are dozens of species among them which do not develop in human faeces, particularly so for the materials from 1988. That was a very dry year and we think that