Stink bugs, pear scale and medfly: distribution maps of invasive fruit pests in Germany.
Invasive pest insects are a growing problem because of climate change and global trade. Some of the most important climate sensitive pest insects of fruits and soft fruits in Germany are in focus of the federal monitoring project ProgRAMM including realtime mapping of their distribution. The Brown marmorated stink bug Halyomorpha halys has been recorded in Germany since 2011 and has already spread in the upper Rhine valley, and to several larger cities. The Southern green stink bug Nezara viridula has been recorded since 1979. This species has been "activated" by climate change due to moderate winter conditions and causes at least as much damage as H. halys, especially in soft fruit (blackberries and raspberries). The European pear scale Epidiaspis leperii is distributed along the Southern Rhine valley for 150 years. It causes major damages in peach and pear in Rhineland- Palatinate in the last years and has already been transported to the North-East of Germany. The Mediterranean fruit fly Ceratitis capitata is occurring regularly in Germany, e.g. with local damages in peach in the area of Lake Constance. Yet it is unknown if this fruit fly species is able to survive overwintering conditions in Germany.