During fi ve years of research (2017–2020 and 2022), 257 fruiting bodies of 34 species of basidiomycetes from the orders Agaricales and Polyporales, Hymenochaetales, Boletaceae, Russulales and Gloeophyllales were collected in diff erent areas of the Saratov region. 108 species of Coleoptera from 24 families were identifi ed that are directly and/or indirectly associated with the fruiting bodies of fungi. The highest species diversity was noted in the families Staphylinidae – 37 species, Tenebrionidae – 11, Ciidae – 10, Erotylidae and Mycetophagidae – 6 species each.