1. Bernstein Center for Computational Neuroscience, Humboldt University of Berlin; Philippstraße 13 Haus 6 Berlin 10115 Germany
2. Electron Microscopy Center, University of Konstanz, Universitaetsstrasse 10; Konstanz 78457 Germany
3. Evolutionary Biology of Invertebrates, University of Tuebingen, Auf Der Morgenstelle 28E; Tuebingen 72076 Germany
4. Ecological Networks, Technical University Darmstadt, Schnittspahnstraße 3; Darmstadt 64287 Germany