TWO KINDS OF REMEDIES 



335 



(a) The Chewers, or Eaters, are provided with a pair of 

 hard, side-working jaws, such as can be seen in a grass- 

 hopper. Farmers who 

 are not disposed to study 

 the mouth parts of de- 

 structive insects may 

 know them by their 

 work. Insects of this 

 sort eat entire parts of a 

 plant. Caterpillars, 

 grubs, and beetles be- 

 long to this class. 



(>) The Piercers or Suckers are insects that have their 

 mouth parts formed into sharp, slender, hollow beaks. 

 They live entirely on sap, which they suck up through 

 the beaks, without eating away the plant's body. They 

 merely pierce the skin of a leaf, and suck up its juices. 

 Plant lice, scales, and squash bugs are sucking insects. 



HAND SPRAYER. 



For shrubs and vegetables. 



A METHOD OF MOUNTING INSECTS. 



Tobacco worm moth at left ; cecropia moth in center ; mourning 

 cloak butterfly at right. 



247. Two Corresponding Kinds of Remedies. The way the 

 mouth parts of insects are constructed, and their method 

 of feeding, determines the choice of materials to be used 

 in spraying them. 



