20 Department Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, Antwerp, Belgium.
21 Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstraße 43, 10115, Berlin, Germany.
22 Hungarian Natural History Museum, Baross u 13, Budapest, Hungary.
23 Νational and Kapodistrian University of Athens, 15771, Athens, Greece.
24 Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, Genoa, Italy.
25 Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, UA, CP 51, 57 Rue Cuvier, 75005, Paris, France.
26 Danish Museum of Natural History, University of Copenhagen, Øster Voldgade 5-7, 1350, København K, Denmark.
27 Norwegian University of Science and Technology, Høgskoleringen 5, Trondheim, Norway.
28 Fraunhofer Institute for Molecular Biology and Applied Ecology, 57392, Schmallenberg, Germany.
29 Oulu University, Paavo Havaksen tie 3, Oulu, Finland.
30 Museum of Zoology "P. Doderlein" and Dept. STEBICEF, Section Animal Biology, University of Palermo, via Archirafi 18, 90123, Palermo, Italy.
31 Laboratório de Ornitologia, Instituto de Ciências Agrárias e Ambientais Mediterrânicas ICAAM, Universidade de Évora, Pólo da Mitra, Valverde, Évora, Portugal.
32 Institute for Game and Wildlife Research, Ronda de Toledo, 12, Ciudad Real, Spain.
33 Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK.
34 Institut Royal des Sciences Naturelles de Belgique, Rue Vautier 29, B-1000, Brussels, Belgium.
35 Museo di Geologia e Paleontologia, Dipartimento di Scienze della Terra, Via Valperga Caluso 35, I-10125, Torino, Italy.
36 Zoological Research Museum Alexander Koenig, Adenauerallee 160, 53113, Bonn, Germany.
37 Finnish Museum of Natural History, University of Helsinki, Post Box 17, FI-00014, Helsinki, Finland.
38 Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, Stuttgart, Germany.