The aim of this article is to investigate the species composition, ecological characteristics and myrmecophily Coleoptera dominant structure in nests of ants of the species Formica rufa Linnaeus, 1761 in the territory of the Saratov region. The studies were conducted mainly in the natural Park of Kumis Polyana (Saratov) and the National Park “Khvalynskiy”. To collect material were determined using standard soil methods of Zoology: screening of the substrate from the nests of ants and laboratory analysis of selected samples.
