1. Independent Researcher, Żywocice, Poland
2. Institute of Biology, University of Szczecin, Szczecin, Poland
3. Independent Researcher, Krapkowice, Poland
4. Institute of Nature Conservation, Polish Academy of Sciences, Kraków, Poland
5. Department of Zoology, Poznań University of Life Sciences, Poznań, Poland
6. Museum of Zoology, University of Cambridge, Cambridge, UK