460 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



three or four weeks the larvae are full grown and transform to 

 pupae within the folded leaves, moths emerging eight or ten days 

 later. By midsummer and fall the insects become quite abundant, 

 and in badly infested vineyards the folded leaves are everywhere 

 in evidence and are quite conspicuous from the color of the lower 

 surface. In the fall the larvae pupate in the folded leaves ajnd 

 pass the winter in these on the ground." Quaintance. 



Control. Where but a few larvae occur they may be crushed 



Nig 384. The white-lined sphix Deilephila Inieata Fab.) : a, moth b, pale 

 larva; c, dark form of larva; d pupa all natural size. (After Chitten- 

 den, U. S. Dept. Agr.) 



by hand, and if this is done with the first brood it will greatly 

 reduce the numbers later in the season. Vineyards sprayed 

 with arsenicals will be protected, as the young larvae will be killed 

 before they fold the leaves. By collecting and burning the fallen 

 leaves or plowing them under deeply, many of the hibernating 

 pupae may be destroyed. 



