140 



Beekeeping 



Set 



each side (pleural plates, 

 PIS and plS). The 

 tergum (dorsal plate) 

 of the first abdominal 

 segment (IT) is fixed 

 to the metathorax. The 

 posterior portion of this 

 segment (propodium or 

 median segment) forms 

 the peduncle (Pd) to 

 which the functional 

 abdomen is attached. 

 The legs and wings are 



Thorax of worker, showing discusged under organs 



of locomotion (p. 154). 



FIG. 74. 



propodium or first abdominal segment 

 (IT). 



Abdomen. 



The abdomen of the female bees (queens and workers) 

 appears to consist of six segments (Fig. 75) but to this 

 number must be added the modified abdominal segment 

 on the thorax (IT). In 

 the drones, there are ad- 

 ditional segments par- 

 tially visible externally. 

 Snodgrass has figured 

 (Fig. 76) the tip of the 

 abdomen of the worker, 

 showing that the eighth 

 abdominal segment is in- 

 vaginated and the eighth FlG 75> _ Lateral view of abdomen of 

 abdominal spiracle opens worker, 



within the invagination. 



Zander 1 further claims that the quadrate plate (Qd) is a 

 part of the ninth tergum. The anal opening (An) is in a 



1 Zander, Enoch, 1899. Beitrage zur Morphologic des Stachelapparates 

 der Hymenopteren. Zeit. fur wiss. Zoologie, LXVII, pp. 288-333. 



