Fig. 3

Component parts of the proboscis. The proboscis of Glossina pallidipes separated into its three component parts: labrum, labium and hypopharynx. a Light microscopy. b SEM, dorsal view of labium. The labrum interlocks with the labium approximately 400 μm from its distal tip, so that a continuous food canal is formed. The tip of the hypopharynx lies beyond the tip of the labrum, but does not reach the tip of the proboscis formed by the labella