INSECTS INJURIOUS TO THE GRAPE 537 



beetles appear, and Brooks states that the average life of a beetle 

 is one year and nineteen days. Although the beetles of the new 

 brood lay some eggs, but few of them develop, and in West 

 Virginia there is practically but one generation, although farther 

 south a second generation may occur. The beetles feed until 

 fall, when they enter hibernation. 



Control. As the beetles feed so long on the foliage in early 

 summer they may be readily killed by spraying with arsenicals 

 as advised for the berry-moth and grape root-worm beetle. 

 Thorough cultivation in midsummer would doubtless destroy 

 some of the pupa? in the same manner as in the case of the root- 

 worm. Infested fruit may be collected and destroyed as for 

 the berry-moth with equally good results. Where spraying is 

 regularly practiced there probably will be little need of resort to 

 other methods. 



