Research on pseudoscorpion communities was performed at four study plots of the Malé Karpaty Mts - Lošonský háj grove, Lošonec-lom quarry, Cajla, Vinosady and at two study plots of the Trnavská pahorkatina hills - Horný háj grove and Lindava during the years 2000-2002. The soil macrofauna was collected by the square method combined with sifting. A total of 949 specimens belonging to 10 taxa were examined, seven of them were identified on species level. The species Neobisium muscorum (Leach, 1817) was the only species common for all the study plots. The Sørensens and Wisharts indices of similarity and PCA have confirmed the presence of four community types, which differed in species composition, dominance, equitability, diversity and mean abundance of pseudoscorpions. We suggest that the community type of the 80-100 year old forests - Lošonský háj grove and Lošonec-lom quarry was the most stable, because of the highest diversity and equitability recorded there. The most unstable community type was represented by the community of the younger (60-80 year old) oak-hornbeam forest Vinosady, which was the most arid and it had a very poor leaf litter layer. The lowest species richness, the lowest mean abundance and diversity were recorded there. In all the study plots, 15 selected environmental variables were measured with aim to find out environmental variables influencing the community. Unfortunately, none of environmental variable had the statistically significant influence on the occurrence of pseudoscorpions.