ACKNOWLEDGMENTS
This research received support from the SYNTHESYS Project http://www.synthesys.info/ which is financed by European Community Research Infrastructure Action under the FP7 ”Capacities” Program. We would like to thank H. V. Grouw and M. Adams from the Natural History Museum (Tring; UK), J. Fuchs and V. Bouetel from the Museum National d’Histoire Naturelle (Paris, France), K. Thorup, J. B. Kristensen and N. Manniche from the National History Museum of Denmark (Copenhagen, Denmark), S. Frahnert, P. Eckhoff and M. Voß from the Museum für Naturkunde (Berlin, Germany), J. B. Rodriguez and J. Cabarga from the Museo Nacional de Ciencias Naturales (Madrid, Spain), U. Johansson and I. Bisang from the Naturhistoriska Riksmuseet (Stockholm, Sweden), A. Gamauf and A. Hille from the Natural History Museum Vienna (Vienna, Austria), D. Berkowic and A. Belmaker from the Steinhardt Museum of Natural History (Tel-Aviv, Israel), and A. Aleixo and S. Sainio from the Finnish Museum of Natural History (Helsinki, Finland). Thanks to volunteers who helped with fieldwork and to Eli Haviv for his help with figures preparation.