1. Institute of Systematics and Evolution of Animals Polish Academy of Sciences, Krakow, Poland
2. Dipartimento di Scienze Agrarie e Ambientali, Università degli Studi di Milano, Milan, Italy
3. Institute of Biology, University of Opole, Opole, Poland
4. Department of Zoology and Animal Ecology, University of Life Sciences in Lublin, Lublin, Poland
5. Department of Ecology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Warsaw, Poland