Update on the situation of Saperda candida in Germany
In Germany, Saperda candida (Coleoptera: Cerambycidae - EPPO A1 list) was first detected on the Island of Fehmarn (Island in the Baltic Sea, part of Schleswig-Holstein) in 2008 (EPPO RS 2008/139) and eradication measures are applied (RS 2021/036). In July 2021, an infested Sorbus tree was found within the infested area. It was located next to a road. In November 2021, exit holes and a total of 74 larvae were found in several Crataegus plants in a hedge about 1000 m south of the first outbreak site. This finding resulted in an expansion of the infested and the buffer zones. The infested hedge was felled and destroyed.
During the survey conducted in 2022, exit holes and larvae were found at 7 locations within the demarcated area. 7 infested zones were established. All infested trees have been felled and incinerated. Eradication measures were carried out in all infested zones in February and March 2023. These measures include preventive destruction of all host plants within a radius of 100 m around the infested plants. In 2023, the official survey will continue.
The pest status of Saperda candida in Germany is officially declared as: Present only in one location, under eradication.
Sources
NPPO of Germany (2023-05).
A map of the regulated area is available at https://www.lksh.de/presse/pressemitteilungen/news/artikel/show/presseinformation-zur-bekaempfung-des-rundkoepfigen-apfelbaumbohrers-saperda-candida-auf-fehmarn/