Low intensity farming systems such as grasslands, hethtlands and wetlands are decreasing across Europe because of agricultural intensification and abandonment. The abandonment and casual management of these habitats might lead to biodiversity loss. The effect of mowing intensity and composition of Orthoptera-assemblages was studied in regularly (once a year) and casually (once in two or more years) managed meadows in the Ormánság (southwest Hungary). The composition of assemblages were characterised on the basis of two-year data (2004-2005) including 22 Orthoptera (8 Ensifera, 14 Caelifera) species. The total number of species and complementarity of species composition was higher in regularly mowed habitats. The intensity of mowing had effect on density and distribution of life form types. In this case the life form spectra of assemblages were more sensitive indicator than species richness. To prove our preliminary results further investigations are necessary.