THE BROAD-BEAN WEEVIL. 5 



semination is through tlic transportation from one locality to another 

 of beans infested with live weevils. It is possible for the acUilts to 

 escape both after the beans have reached their destination and while 

 they arc en route. Planting of these infested beans in a new locality 

 is l)Oiind to result in an infested crop. 



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Fig. 4. — Map of California, showing counties from which the hroad-bean weevil has heen 



taken or reported. 



NATURE OF DAMAGE. 



Damage cansed by the broad-bean weevil is principally due to the 

 fact that the larva feeds and transforms to the adult within the 

 beans (PL I, fig. S, a,h). Many adults remain intlie beans for sev- 

 eral months, and their presence renders the beans unfit for food. 

 Some adults emerge soon after forming, leaving round holes in the 



