New occurrence of Ips duplicatus Sahlberg in Herstal (Liege, Belgium)
Piel F., Grégoire JC., Knížek M.
The double-spined spruce engraver Ips duplicatus is not present in Belgium and France. In summer 2003, several adult Ips duplicatus beetles were caught near quays in Herstal (Liege) during a survey. Large volumes of spruce logs, from Russia and the Baltic countries, had been imported to the immediate locality where the beetles had been caught. Thus, it is most likely that the capture specimens were introduced with these consignments. © The Authors (2006).