1. Natural History Museum University of Oslo P.O. Box 1172 Blindern NO‐0318 Oslo Norway
2. Department of Biological Sciences The George Washington University Washington DC 20052 USA
3. Museum of Comparative Zoology & Department of Organismic and Evolutionary Biology Harvard University 26 Oxford Street Cambridge MA 02138 USA
4. Departament de Biologia Animal and Institut de Recerca de la Biodiversitat (IRBio) Universitat de Barcelona Avinguda Diagonal 643 Barcelona 08071 Catalonia Spain
5. Arachnology California Academy of Sciences 55 Music Concourse Drive, Golden Gate Park San Francisco CA 94118 USA
6. Center for Macroecology, Evolution and Climate Natural History Museum of Denmark University of Copenhagen Universitetsparken 15 Copenhagen DK‐2100 Denmark