Here you can request to determine the cause of the damage. You can view the requests of other users and sort them according to the selected criteria. In addition, you can get information about your request, and you can follow the progress of its current state. If your application was not approved, it had probably been because it was impossible to identify the damage based on the sent photos or because the application does not address our topic - determining the pests of trees and shrubs. We will inform you about the status of your application by email.
Dear Jer, thanks for your request. This looks like a gallery causes by the early stage of larva of the beele Coraebus fasciatus, also know under the name Coraebus florentinus. It can be serious pests of oak forests. With best regards M. Zubrik
Dear Fernando, from this picture is not easy to say what exactly caused damage of the tree. There could be several reasons of this situation. One from the possible pest thats cause tree branch decline is Coraebus florentinus - an oak burncow. Read more about this species here: https://www.forestpests.eu/pest/coraebus-florentinus. With best regards M. Zubrik