1. Research Institute for Nature and Forest (INBO), Herman Teirlinckgebouw, Havenlaan 88 bus 73, B-1000 Brussels (Belgium) and Research Group Terrestrial Ecology (TEREC), Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent (Belgium) and Entomology
2. Biodiversity Monitoring & Assessment, Royal Belgian Institute of Natural Sciences (RBINS), Rue Vautier 29, B-1000 Brussels (Belgium) and Behavioural & Evolutionary Ecology, Université Libre de Bruxelles (ULB), Av. F. D. Roosevelt 50, B-1050 Brussels
3. Muséum national d'Histoire naturelle, Direction des Collections, Pôle Expédition, case postale 30, 57 rue Cuvier, F-75231 Paris cedex 05 (France)
4. UMS 2006 Patrimoine naturel (« PatriNat »), AFB, CNRS, MNHN, case postale 41, 57 rue Cuvier, F-75231 Paris cedex 05 (France)
5. Research Institute for Nature and Forest (INBO), Herman Teirlinckgebouw, Havenlaan 88 bus 73, B-1000 Brussels (Belgium)