Bees of the species-rich genus Andrena (Hymenoptera, Apoidea) emit, when handled, a strong odour which is easily perceived by humans. As proved in the 11 species investigated so far, the compositions of the volatile multicomponent secretions are species specific [1 -3], while the odour bouquets of males and females strongly resemble each other.
Bergström, Gunnar and Tengö, Jan, "Multicomponent Mandibular Gland Secretions in Three Species of Andrena Bees (Hym., Apoidea)" (1982). Ba. Paper 115.
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