EN
The community structure and seasonal dynamics of coprophagous hydrophilid beetles were studied in the Wielkopolska region using pitfall traps. The material, collected over 2 years, included 20 species of Hydrophilidae represented by 3,672 individuals and belonging to four genera: Cercyon LEACH, 1817, Cryptopleurum MULSANT, 1844, Megasternum MULSANT, 1844, and Sphaeridium FABRICIUS, 1775. The studied community was dominated by Cercyon pygmaeus, which made up 33.6% of all gathered beetles. Most collected species were accidental. Hydrophilid beetles were observed from April until September, reaching their highest numbers in spring and late autumn.