Three substances ejected by Apis mellifera drones from everted endophallus and during natural matings with queen bees

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Figure 12

Epithelial membranes sucked into the tip of the syringe for instrumental insemination of queen bees.

Age-dependent morphology and ultrastructure of the cornua glands in drones of Apis mellifera
Apidologie 40 (2009) 600–607