150 



feeding on nuts in West Virginia represents two groups, or 

 genera; ten species belonging to the genus Balaninus and four 

 to the genus Conotrachelus. For convenience, the species of 

 Balaninus are referred to in this publication as " weevils" and 

 those of Conotrachelus as "curculios". 



NAMES OF THE INSECTS AND NOTES ON HOST PLANTS. 



The following list gives the names of the nut-attacking 

 snout beetles that have been studied in this State together with 

 references to the nuts for which they show a preference. Common 

 names have heretofore been given to but a few of the species and 

 the names used here are merely suggested *as possessing some de- 

 gree of appropriateness. The common names of the first four 

 species in the list have been used in the past but only that of 

 the second has been officially adopted. , 



Larger Chestnut Weevil, Balaninus proboscideus Fab. 

 Chestnuts and chinquapins. 



Chestnut Weevil, B. rectus Say. Chestnuts and chinquapins. 



Hickorynut Weevil, B. caryae Horn. Hickorynuts of sev- 

 eral species. 



Hazelnut Weevil, B. obtusus Blanch. Hazelnuts. 



Common Acorn Weevil, B. quercus Horn. Acorns of red, 

 black, scarlet and other biennial oaks. 



Mottled Acorn Weevil, B. nasicus Say. Found here most 

 abundant on red oak, more sparingly on other biennials. Has 

 been bred elsewhere from acorns of white and chestnut oaks. 



Straight-snouted Acorn Weevil, B. orthorhynchus Chittn. 

 Equally abundant on red, Hack and scarlet oaks. 



Sooty Acorn Weevil, B baculi Chittn. Common on red, 

 black and scarlet oaks. Less common on white oak. 



Confused Acorn Weevil, B. confusor Ham. Abundant on 

 chestnut oak. Kare on white cak. 



Spotted Acorn Weevil, B. pardalus Chittn. Abundant here 

 on white oak and less abundant on chestnut oak. Has been rear- 

 ed in other localities from acorns of biennials and other annuals. 



