Results of studies of the spatial distribution of beetles (Coleop-tera) in the burrows of three colonies of sand martins Riparia riparia (Linnaeus, 1758) in the northern Lower Volga region (Saratov region) are present. A total, 15 species (149 specimens) of beetles from 10 families were identified. Nine bee-tle species to nests of Riparia riparia are recorded for the first time. One species, Anthrenus flavidus, was first recorded for the European part of Russia and the Sa-ratov region. The samples are contained obligate (Haploglossa nidicola and Eu-spilotus perrisi) and facultative nidicols (Saprinus rugifer and Anthrenus fla-vidus). For the inner part of the burrow, five species (40 specimens) were noted, for the outer part – 11 (109), the share of general species was 13.2%. In both parts of the burrow, the eudominant Haploglossa nidicola (81.9%) and the recedent Euspilotus perrisi (8.1%) were found. |