SNOUT-BEETLES AND GRUBS EATING LEAVES 163 



swarm on the plants, eating the freslily expanded leaves and gnawing 

 the surface of stems in such way as to kill the growth above. 



Fig. 174. — The Alfalfa Lcaf-woovil. En- 

 larged and natural size. Original. 



Fig. 175. — Pupa of the Alfalfa 

 Leaf-weevil. Enlarged and 

 natural size. Original. 



The adult is one eighth to tliree sixteenths of an inch long, and when 

 freshly emerged is brown. It grows darker in a few days. Its body is 

 covered with black and 

 gray hairs, giving it a 

 mottled appearance. 

 The grub is one fourth 

 inch long, tapering toward 

 each extremity, and has 

 a light stripe down its 

 back. 



Remedial measures 

 thus far devised include : 

 t borough disking early 

 in the spring so as to 

 induce quick, \'igorous 

 growth of the plants; 

 the use of a spike-tooth 

 harrow combined with a 

 brush drag immediately 

 following the first cutting 



Fig. 176. — Egg puncture 

 and work of the Alfalfa 

 Leaf-weevil. Original. 



Fig. 



177. — Feed- 

 ing punctures of 

 the Alfalfa Leaf- 

 weevil. Original. 



