New localities of Xylobanellus erythropterus (BAUDI, 1871) in the Białowieża Primaval Forest are given. The new remarks on the species biology are provided.
The occurrence of Omonadus bifasciatus (ROSSI, 1792) in Poland has been confirmed after 100 years. Detailed data on collecting circumstances is reported and the list of accompanying beetle species is given. The bionomy and habitat preferences of O. bifasciatus are discussed on the basis of literature and unpublished data.
Calamobius filum (Rossi, 1790) was found in the Western Bieszczady Mountains. The species is new to the Polish fauna. The species distribution, notes on its biology and northward expansion are provided. The habitus of C. filum is demonstrated.
New localities of Leioderes kollari Redtenbacher, 1849 in Poland are presented. The distribution map of the species is provided. Remarks on its biology are discussed.