GARDEN PESTS 



This ■ class are less easily handled too than the 

 greedy, chewing, devouring kind, because poisons on 

 the plant do not affect them in the least. The only 

 sure death to them is contact poison — which means 

 that every insect must actually be located and treated. 

 Poisonous fumes are available sometimes, but ordi- 

 narily a spray is the accepted method of dealing with 

 them — a spray applied 

 so thoroughly that every 

 twig and leaf and branch 

 is reached, on every 

 side. Halfway measures 

 are time wasted. 



Not all of the insects 

 that must be dealt with 



are obliginej enough to _ _ ~ ~ ~ 



, ^ The True Bug. Head of 



live m the open, or squash Bug. Haustellate 

 above ground. Root Class, 

 maggots, root lice and 



grubs work underground, hence are classified as 

 subterranean; borers keep within the bark or 

 wood of a plant or in its stem, gall insects conceal 

 themselves within the galls which their presence 

 has caused, and leaf miners "mine" the leaves. All of 

 these are termed internal feeders; and the destruction 

 of both these classes of concealed insects requires 

 special methods, although they do of course belong to 

 one or the other of the two great divisions first explained. 

 Borers are mandibulate, also grubs and "miners;" 

 some form of louse is generally responsible for the f orma- 



43 



