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We investigated the age-dependent morphology and ultrastructure of the cornua glands in drones of Apis mellifera. Two epithelial types could be distinguished, each corresponding with a different type of cuticle. The thickness of both epithelia decreases during the period of sexual maturation. Ultrastructural research did not reveal a difference between the two epithelia.
We investigated the morphology and ultrastructure of the cervical lobes of Apis mellifera drones with respect to age. The lobe epithelium decreases while the cuticle thickness increases as the drone gets older. Ultrastructural study revealed that the lobe has no secretory function but possibly acts as an inflatable bag during copulation.
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