BEATA M. POKRYSZKO
Museum of Natural History
Wrocław University
Sienkiewicz 21, 50 - 335 Wrocław, POLAND


ANDRZEJ LESICKI
Department of Cytology and Histology, Faculty of Biology
Adam Mickiewicz University
Umultowska 89, 61 - 614 Poznań, POLAND


EWA STWORZEWICZ
Institute of Systematics and Evolution of Animals
Polish Academy of Science
Sławkowska 17, 31 - 016 Kraków, POLAND