* Correspondence: magowski@amu.edu.pl Bark beetles (Coleoptera: Curculionidae: Scolytinae) are one of the most important pests of woody plants, with immense economic impact, attacking unthrifty, broken, over-mature, dying, or, rarely, even healthy hosts (Wood, 1982). Among bark beetle species, the larger European elm beetle, Scolytus scolytus (Fabricius, 1775), the smaller European elm beetle, ...