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Bark beetles (Curculionidae: Scolytinae) represent an important insect group including many significant pest species, but in some cases, the distribution and ecology of many bark beetles are still not well known. Maple bark beetle Scolytus koenigi Schyverew, 1890 is one of the mentioned group of species. The following study presents i) the first data of the occurrence of S. koenigi in Bohemia, ii) the first data of the species occurrence in an urban environment (large cities – Prague and Brno), iii) the distribution of the species in the Czech Republic since its first record (in 2013), and iv) new data about the bionomy of the species (i.e. a new host tree – Acer pseudoplatanus L. and refinement of the colonized substrate range diameter).