1. Department of Earth and Environmental Sciences, University of Pavia, 27100 Pavia, Italy
2. Functional Morphology Lab, Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium
3. Evolution and Optics of Nanostructures Group, Department of Biology, Ghent University, 9000 Gent, Belgium
4. Department of Biology and Biotechnologies “L. Spallanzani”, University of Pavia, 27100 Pavia, Italy
5. Departamento de Ecología Evolutiva, Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
6. Museo di Storia Naturale di Milano, 20121 Milano, Italy