104 



ARTHROPODA 



famous cochineal dye from which carmine is ex- 

 tracted. 



The true bugs (Heteroptera) contain several species of 

 considerable interest to man. They possess a beak per- 

 mitting them to feed on the juices of plants or insects, or 



FIG. 114. Maple 

 scale, five adults 

 and many young. 

 Photograph en- 

 larged twice. 



FIG. 115. Bedbug viewed 

 from the side and back ; a, 

 beak used in piercing the 

 skin and sucking the blood. 

 Photograph enlarged twice. 



on the blood of vertebrates. The wings when present 

 consist of two pairs. The anterior ones function as elytra 

 or covers, and have the basal half thickened, a feature from 

 which the name of the order, Hemiptera (half-winged), 

 is derived. 



The bedbug (Cimex lectularius), found in all parts of the 

 world, is able to live a year or more without food. This 



