69 



borders the outer edge of the wing- 

 covers, and sends inward, as the 

 figure sliows, three curved, tooth- 

 shaped projections. On account ot 

 these it might be called the three- 

 toothed borer, if it were understood 

 that the teeth were merely color- 

 marks. Its scientific name is given 

 it l)ecause of these three points of 

 color, and is Saperda tridetttata^ 

 Oliv. The general color is dark 

 bi'own, and besides the red lines and points mentioned, there are 

 other red markings on the thorax. There are also black dots on 



Figure 52. 



Elm Bokp;k. 

 Saperda tridentata, Oliv. 



vtd. 





'^^ 

 ^ 



mx. 



ant 



mcl 



md 



Figure 53. 



Larva ok Ki.m Borer. 

 Saperda tridentata, O liv. 



Much enlarged, v. under side of head, and five following joints ; lat. side view of the 

 same; md. jaws, or mandibles ; tnx. maxilire; <j«/. antenna ; /M labrum. 



