i 9 4 NATURE-STUDY 



branous. Hence they are called Hemiptera (" Half-and- 

 half "-winged). Bugs have sucking and piercing beaks, 

 which are very different from the mouth-parts of the locust. 

 The young resemble the adults, except that they are smaller 

 and have no wings. Bugs all live upon liquid food, the 

 blood of animals, or the juices of plants. 



The squash-bug, box-elder bug, chinch-bug, plant-lice, and 



FIG. 53. A Cage of Luna-moths. 



the common louse belong to the Hemiptera, and the cicada is 

 also related to them. Some parasites, like the louse, have 

 lost their wings from disuse. Some of the bugs, like the 

 chinch-bug and plant-lice, are at times very numerous, and 

 commit much damage to crops and other vegetation. 



During the summer one of the most common butterflies is 

 the common White Cabbage Butterfly seen flitting around 

 our gardens. Perhaps you will see one of them alighting for 



