EN
The majority of species demonstrated above constitutes widely distributed beetles throughout the area of Poland, including its western part (I WAN et al. 2012). Worth noting are species rarely recorded from this part of the country.The localities of Diaclina fagi (P ANZ.) presented in this work confirm the occurrence of this species in the western part of the country. Opatrum riparium SCR . is a species known today only from 3 localities that are situated in the Wielkopolsko-Kujawska Lowland (B UNALSKI et al. 2011, K ONWERSKI et al. 2015). Its largest population still persists in the valley of Sama River, where it is observed quite numerously during the spring. Phylan pilipes (H BST) has been recorded in Poland only from the coast of the Baltic Sea, which is evidenced in the presented materials. Tenebrio obscurus F. and Tenebrio opacus D UFT. are species associated predominantly with old trees and hence can be also found in their vicinity.