24 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



attained full growth they leave the web or the partly grown fruit 

 and travel to the leaves, upon which they form pupal cases. The 



Fig. 5.— Injury to grape cluster by larva of grape-berry moth during and just after the 

 blooming period. ( Original 



larva makes the pupal case by cutting away a portion of the leaf and 

 drawing the free edge down to the surface of the leaf with strands 



Fig. 6.— Pupal cases made on grape leaf by full-grown larvae of the 

 first brood of the grape-berry moth. (Original.) 



of silk (see fig. 6). The inside of the case is lined with the same 

 silken material. In this case the larva transforms to the pupa (see 



