1. Department of Evolutionary Biology, Integrative Zoology, University of Vienna, Vienna, Austria
2. Department for Apiculture and Bee Protection, AGES – Austrian Agency for Health and Food Safety, Vienna, Austria
3. Institute for Seed and Propagation Material, Phytosanitary Service and Bees, AGES - Austrian Agency for Health and Food Safety, Vienna, Austria
4. Institute for Food Safety, AGES - Austrian Agency for Health and Food Safety, Linz, Austria