1. Department of Biogeography, University of Trier, Trier, Germany; E-mail: krehenwinkel@uni-trier.de
2. General and Systematic Zoology, Zoological Institute and Museum, University of Greifswald, Germany
3. Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
4. Institute of Zoology, Behavioural Biology, Universität Hamburg, Germany
5. Department of Bioscience, Aarhus University, Denmark
6. Max Planck Institute for Evolutionary Biology, Plön, Germany
7. Center for Comparative Genomics, California Academy of Sciences, San Francisco, California, USA
8. Department of Environmental Science, Policy and Management, University of California, Berkeley, USA