1. Crop Research Institute , Drnovská 507, 16106 Praha 6 – Ruzyně , Czech Republic
2. Masarykova 882, 25263 Roztoky, Czech Republic
3. Institute of Forest Ecology, Slovak Academy of Sciences , Ľ. Štúra 2, 96053 Zvolen , Slovakia
4. Department of Zoology, Faculty of Natural Sciences, Comenius University , Mlynská dolina, Ilkovičova 6, 84215 Bratislava , Slovakia