1. MTA-DE “Lendület” Behavioural Ecology Research Group, University of Debrecen, 1 Egyetem-tér, Debrecen, H-4032, Hungary (e-mail: )
2. Hungarian Natural History Museum, 13 Baross utca, Budapest, H-1088, Hungary (e-mail: )
3. Department of Conservation Zoology, University of Debrecen – Hortobágy National Park Directorate, 2 Sumen Street, Debrecen, H-4024, Hungary (e-mail: )
4. Department of Parasitology, I. I. Schmalhausen Institute of Zoology, 15 Bogdan Khmelnitsky Street, Kyiv-30 01601 Ukraine (e-mail: )
5. H. W. Manter Laboratory of Parasitology, University of Nebraska State Museum of Natural History, University of Nebraska, W 529 Nebraska Hall, Lincoln, Nebraska 68588-0514, U.S.A. (e-mail: )