174 THE STUDY OF INSECTS. 



plants and will feed upon no others ; thus, the Red-scale of 

 the Orange does not trouble deciduous fruits. On the other 

 hand, other species have a wide range of food plants. This 

 is the case of the Greedy-scale, which infests a great variety 

 of both cultivated and wild plants. 



Figure 202, page 165, represents the Scurfy Bark-louse, 

 Chionaspis furfurns (Chi-o-nas'pis fur'fur-us), a species very 

 widely distributed on apple, pear, and cherry ; Figure 212, the 

 Pine-leaf Scale, Chionaspis pinifolice (pin-i-fo'li-ae), which 

 occurs on various species of pine and spruce in all parts of 

 the United States where these trees grow; and Figure 213 

 represents the red scale of California, Aspidiotus aurantii 

 (As-pid-i-o'tus au-ran'ti-i), which is very destructive to 

 oranges and lemons. 



FIG. *n.Nepa. apiculata. See p. 131. 



