1. University of Wrocław, Department of Biodiversity and Evolutionary Taxonomy, Myrmecological Laboratory, Wrocław, Poland SS: e-mail: / ORCID 0000-0003-0811-2309 LB: e-mail: lech.borowiec@uwr.edu.pl / ORCID 0000-0001-5668-6855
2. Department of Ecology and Systematics, Faculty of Biology, School of Science, National and Kapodistrian University of Athens, Athens, Greece e-mail: / ORCID 0000-0001-5273-7109
3. Section of Zoology and Marine Biology, Department of Biology, National and Kapodistrian University of Athens, Athens, Greece e-mail: / ORCID 0000-0002-2728-3122