﻿THE GEANARY WEEVIL 



9 



infested with weevils and only prompt treatment prevented very 

 severe losses. Hundreds of thousands of tons of wheat were sterilized 

 and screened and from every 2,500 bags of wheat so treated between 

 200 and 300 pounds of weevils were removed, an enormous number 

 when one considers that there are about 442,000 weevils to the pound. 

 Although three species of weevils predominated in this wheat, the 

 granary weevil is said to have caused the most damage. 



Fig. 4. — Com kernels showing evidences of injury by the granary weevil. Note long white streaks 

 on kernels to right. These indicate burrows of very young larvae of the weevil just beneath surface 

 of graia 



TECHNICAL DESCRIPTION 



THE BEETLE 



(Fig. 1) 



Elongate-oblong, feebly convex. Chestnut brown to piceous, moderately- 

 shining. Beak two-thirds as long as thorax, slender, cylindrical, finely and 

 sparsely punctate. Thorax sparsely punctate, punctures coarse and on the disk 

 more or less fusiform. Elytra deeply striate, stria; punctured at bottom, not 

 serrate; intervals smooth, alternately wider and more elevated, especially toward 

 the base; the sutural with a row of elongate punctures. Pygidium coarsely 

 cribrate. Bfxly beneath coarsely and less densely punctured than in oryza. 

 Length 3 to 4 mm. 



The original description of Llnn6 follows: 



"C. longirostris piceus oblongus, tlnjrace punctate longitudinc elytrorum." 



THE EGG 



(Fig. 7, e) 



Egg opaque, shining, white, ovoid to pear-shaped in form, widest below middle, 

 bottom brfjadly rouiiflerl, mwM. niirrowirig gradually toward top, which is some- 

 what flatteri(!d and l)caririg a small rounded protuberance that fits into a cap or 

 jjliif; cementing the egg in place. 



Length O.OS to O.SO nun., width about 0.33 mm. 



72238°— 26 2 



