1. Department of Forest Ecosystems Protection, University of Agriculture in Krakow, Al. 29 Listopada 46, Krakow 32-425, Poland
2. Norwegian Institute of Bioeconomy Research, P.O. Box 115, 1431 Ås, Norway
3. Department of Biological Pest Control, Institute of Plant Protection, Władysława Węgorka 20, Poznań 60-318, Poland
4. Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0002, South Africa