Cover: "The Malagasy hawkmoth Xanthopan morgani praedicta approaches from below for inserting its tongue into the spur of a virgin flower of Angraecum sesquipedale. Spur length is 33.2 cm, tongue length is 22cm;" see L.T. Wasserthal: The pollinators of the Malagasy Star Orchids Angraecum sesquipedale, A. sororium and A. compactum and the evolution of extremely long spurs by pollinator shift, (pp 343-359).