Bees. Wasps. 



133 



wings, with few veins, and a mouth with strong man- 

 dibles but with suctorial labium and maxillae. The 

 abdomen is often joined to the thorax by a narrow 

 foot-stalk and the abdominal tip is modified into 

 a sting which consists of two poison glands opening 



FIG. 77. 



i. Mouth of the Bee. d, clypeus ; e, labrum ;f, mandible ;g, h, maxilla and 

 its palp ; *, lingua ; **, paraglossae. 2. Tongue, more highly magnified. 



into a common vesicle whose duct is elongated into 

 a tube provided with a piercer barbed at the point. 



In bees the wings are not folded and the basal 

 joint of the hindermost tarsus is flattened and often 

 bristle-clad to collect the pollen for the food of larvae; 



