Bumblebee inquilinism in Bombus (Fernaldaepsithyrus) sylvestris (Hymenoptera, Apidae): behavioural and chemical analyses of host-parasite interactions Stéphanie Dronnet, Xavier Simon, Jean-Claude Verhaeghe, Pierre Rasmont and Christine ErrardApidologie, 36 1 (2005) 59-70DOI: https://doi.org/10.1051/apido:2004070