Tracking the spread of the northern bark beetle (Ips duplicatus [Sahlb.]) in Europe and first records from Switzerland and Liechtenstein

• DOI: 10.3897/alpento.4.53808
• Publication Date: 2020-09-02T14:01:25Z
• Authors: Beat Wermelinger; Doris Schneider M...; Miloš Knížek; Beat Forster
• Keywords: Pheromone trap; Western europe

The northern bark beetle ( Ips duplicatus ), in Europe originally restricted to countries, expanded its distribution range eastern the 20 th century and is now causing considerable damage spruce forests. In past decades presence has been confirmed several Central European countries. By means of pheromone traps visual inspection infested logs, this study we demonstrate that I. also present Rhine valley Switzerland Liechtenstein. Breeding galleries with beetles exit holes an log indicate trapped had successfully developed a local stand nearby. An inquiry addressed entomologists was carried out obtain information references concerning year first record or mention their respective This substantiated expansion historical southeast middle last clearly showed recent movement westward, Germany currently westernmost countries where species occurs. likely attributed transport timber. economic significance expanding discussed view co-occurrence notorious pest typographus .