468 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



lumps of earth or just below the surface of the soil, and in them 

 transform to pupae, from which the beetles emerge in eighteen 



to nineteen days. Thus the com- 

 plete life cycle from egg to adult 

 requires thirty-five days. The 

 hibernating beetles are still abroad 

 when the new 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 



r 



FIG. 391. Grape curculio larvae 

 natural size. (After Brooks.) 



FIG. 392. Grapes showing egg-punctures of grape curculios. (After Brooks.; 



summer they may be readily killed by spraying with arsenicals 

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







* 



*? 



FIG. 393. Showing the resemblance of the grape curculios at 2 to excrement 

 of sphinx caterpillars at 1, and mummied grapes at 3. (After Brooks.) 



