GENUINE SNOUT-BEETLES. 207 



THE WALNUT CURCULIO. 



{Coiiotraclicliis jiigknidis Lee). 



Looking at the adult of this l)eetle we are apt to imagine 

 that we have before us simply a very large specimen of the plum- 

 curcuiio, with the white band across the posterior portion of the 

 wing-covers whiter and more clearly marked. The sealingwax- 

 like projections, which form such a distinctive feature in iiciiitfhar 

 are also present, while in all other species of the large genus Con- 

 otrachehis they are either simply indicated or entirely absent. 



The injurv caused to our native walnuts and butternuts by 

 these beetles is considerable, as they frequently take more than 

 the lion's share, so that no nuts are left for our u&e. Infested 

 nuts show the presence of the worm inside by a discolored spot 

 upon the green hu.sk, from which dark-colored masses not infre- 

 (juently project. 



Several other species occur, for instance C. cratacgi Walsh, 

 in the fruits of hawthorns ; C. elegans Say, in the partly rolled up 

 leaves of the pig-hickory, which being cut off hang down, with- 

 er and turn black; C. uaso Lee, and C. posticatus Say, in the fruit 

 of the haw. 



THE QUINCE CURCULIO. 



(Conotracheliis crafacgi Walsh). 



As already mentioned this beetle is found in Minnesota, and 

 eats in its larval stage the fruits of the hawthorn ; but in the 

 east it has become rather destructive to the ([uince. As may be 

 seen from the illustration (Fig. 221), it is a broad-shouldered 

 snout-beetle, larger than our enemy, the plum ctn-culio, possessing 

 also a larger snout. It is of an ash-gray color, mottled, in fresh 

 specimens with ochre-yellow or white, with a dusky and almost 

 triangular spot at the l)ase of the pro-thorax ; there are seven 

 narrow longitudinal ridges on the elytra, with two narrow rows 

 of rather deep pits l)etween. It is most commonly found during 

 the month of June, when it punctures the young fruit, making 

 a cylindrical hole a little larger than is sufficient to admit the tgg ; 



