410 



FRUIT INSECTS 



Fig. 35G. — A group of eggs of the grape leaf- 

 hopper. Greatly enlarged. 



the vineyards, unless neglect has allowed a carpet of weeds 

 and grasses to grow. A neighboring tract of woodland or a 

 little valley, ditch or swale overgrown with brush, or a border- 

 ing strip of thick grass 

 form an ideal place for 

 hibernation. In New 

 York the hoppers do 

 not feed during the 

 winter, although on 

 sunny days during warm 

 spells they are some- 

 times seen flying about. 

 In the milder climate of 

 California they feed con- 

 siderably during the 

 warmer winter days on the leaves of various low-growing plants, 

 such as alfilaria and burr-clover, in the shelter of which they 

 find protection. 



In New York the adults emerge about May 1, or a little earlier 

 if it is warm, and 

 begin feeding on 

 almost any suc- 

 culent growth that 

 is available, such 

 as young beeches 

 and maples in the 

 woods, and the 

 grasses, strawber- 

 ries, dewberries or 

 raspberries near 

 vineyards. They 

 migrate to the 

 vines about the middle of May, or as soon as the grape leaves 

 are well expanded. The lower leaves are first attacked, and as 



Fig. 357. — Nymphs and molted nymph skins of the 

 grape leaf-hopper. Enlarged. 



