1. Laboratory of Entomology, Wageningen University Droevendaalsesteeg 1 Wageningen 6708 PB The Netherlands
2. Netherlands Institute of Ecology Droevendaalsesteeg 10 Wageningen 6708 PB The Netherlands
3. Department of Ecological Sciences – Animal Ecology Vrije Universiteit Amsterdam De Boelelaan 1085 Amsterdam 1081 HV The Netherlands