1. Community and Conservation Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen Nijenborgh 7 9747 AG Groningen The Netherlands
2. Bargerveen Foundation Toernooiveld 1 6525 ED Nijmegen The Netherlands
3. Department of Animal Ecology and Ecophysiology Institute of Water and Wetland Research, Radboud University Nijmegen Heijendaelseweg 135 6525 AJ Nijmegen The Netherlands
4. Terrestrial Ecology Unit, Department of Biology Ghent University K. L. Ledeganckstraat 35 B‐9000 Ghent Belgium
5. De Vlinderstichting/Dutch Butterfly Conservation Mennonietenweg 10 6702 AD Wageningen The Netherlands
6. Laboratory of Entomology Wageningen University Droevendaalsesteeg 1 6708 PB Wageningen The Netherlands