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  1. By: Müller, Andreas - Mauss, Volker - Prosi, Rainer
    Type: Article
    In: Journal of Hymenoptera Research
    Volume: 60
    Date: 2017
    Page Range: 99-109
    Publication Info: Pensoft Publishers 2017
    Subjects: Apiformes  Echium  Heat tolerance  Hoplitis adunca species group  labial glands