I would like to thank my supervisors Nicklas Jansson, Karl-Olof Bergman and Per Milberg for their support during this project.

The landowners for their permission to put up traps on their trees and the entomologists Stig Lundberg and Rickard Andersson for identification of some of the species.

Financial support to this project came from Eklandskapsfonden the municipality of Linköping and The County Administration board of Östergötland.