INTRODUCTION 



XUl 



Thus if a southern farmer complain of "the budworm," 

 failing to state what plant is being injured, it is an impossi- 

 bility to identify the insect concerned. The budworm of corn 

 is the twelve-spotted cucumber beetle of the northern states, 

 while the budworm of tobacco is the same as the tomato fruit 

 worm and the corn ear worm or bollworm or a related species. 



The first pest is Diabrotica 12-punctata; the second is 



Fig. 3.— Diabrotica 12- 

 punctata. (Riley, U. S. 

 Dept. Agr.) 



Vv<-X- 



Fig. 4.— Bollworm moth in natural position. 

 About twice natural size. (Quaintance, 

 U.S. Dept. Agr) 



Hdiotliis ohsoleta} The parent of the first is a beetle (fig. 3) 

 and of the latter a moth (fig. 4). It should be added that the 

 first named species is also known as drill worm, while the latter 

 is also called the shatter worm, this last name being shared also 

 by the larger corn stalk-borer and perhaps by other species hav- 

 ing the same habits, such as the fall army worm. The last is 

 the grass-worm of the South and the fall army w^orm of the 



* It is to be regretted that the scientific names are not more stable, but the 

 bollworm was generally recognized under the name of Heliothis. until it was 

 recently changed to H. obsoleta. 



