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may develop into mature insects that will themselves produce eggs before 

 the parent beetles have ceased^ to oviposit. Most of the eggs produced by 

 this second brood, however, are infertile. The eggs hatch in from four to 

 seven days, according to temperature, the average being about six days. 



Fig. 2. (a) (Larva; (b) Posterior tip of larva; (c) Egg (greatly enlarged); 



(d) Grape berry, showing egg puncture; (e) Egg in situ under 



skin of grape berry. 



The Larva. 



The larva of the grape curculio is a small, legless grub, slightly over one- 

 fourth of an inch in length, which in color is white with a brown head. The 

 body has a sparse clothing of very fine, short hairs. 



Fig. 3. Larvae grape curculio. 



The young larva begins to feed on the pulp of the fruit before it is free 

 from the shell. Within three or four days it attacks the seed and thereafter 

 may be found feeding on either the seed or the pulp so long as it remains in 

 the grape. When full grown it forms a small hole through the skin of the 

 fruit through which it escapes. As soon as it leaves the grape it becomes 

 exposed to ants and other enemies and it hurries under cover with all 

 possible speed. Usually, it crawls beneath a lump of earth, a small stone 

 or fallen leaves, or, if the ground is soft, it will work its way beneath the 

 soil for a short distance. When it chances upon ground that is solid and 

 free from any small objects beneath which it may find protection, it will 

 gather grains of earth and sand and form its cocoon en the surface of the 

 ground. Most of the larvae leave the fruit early in the morning. 



The larvae require about two weeks in which to attain full growth. Twr 

 or three larvae may develop within one grape but usually only one is found. 



