EN
In this paper authors present results of the faunistic and ecologic survey about fauna of ant-like stone beetles (Staphylinidae: Scydmaeninae) of the Kampinos National Park, which was conducted in the years 2011-2020. Together with literature data occurrence of 22 species is confirmed which is almost 50% of the country richness of that group of beetles. During the study 13 species were recognized as new for the park and 7 species as new for the Mazovian Lowland. Most of these species are widely distributed in Poland, only four are very rarely collected: Euconnus maklinii (MANNERHEIM, 1844), Scydmaenus perrisi (REITTER, 1879), Scydmoraphes helvolus (SCHAUM, 1844), and S. minutus (CHAUDOIR, 1845).