. Manual of fruit insects. tly enlarged. the vineyards, unless neglect has allowed a carpet of weedsand grasses to grow\ A neighboring tract of woodland or alittle valley, ditch or swale overgro^^^l with brush, or a border-ing strip of thick grassform an ideal place forhibernation. In NewYork the hoppers donot feed during thewinter, although onsunny dajs during warmspells they are some-times seen fljang the milder climate ofCalifornia they feed con-siderably during thewarmer winter days on the leaves of various low-growing plants,such as alfilaria and burr-clover, in the shelter of wh
. Manual of fruit insects. tly enlarged. the vineyards, unless neglect has allowed a carpet of weedsand grasses to grow\ A neighboring tract of woodland or alittle valley, ditch or swale overgro^^^l with brush, or a border-ing strip of thick grassform an ideal place forhibernation. In NewYork the hoppers donot feed during thewinter, although onsunny dajs during warmspells they are some-times seen fljang the milder climate ofCalifornia they feed con-siderably during thewarmer winter days on the leaves of various low-growing plants,such as alfilaria and burr-clover, in the shelter of which theyfind protection. In New York the adults emerge about May 1, or a little earlierif it is warm, andbegin feeding onalmost any suc-culent gro\\i;h thatis available, suchas young beechesand maples in thewoods, and thegrasses, strawber-ries, dewberries orraspberries nearvineyards. Theymigrate to thevines about the middle of May, or as soon as the grape leavesare well expanded. The lower leaves are first attacked, and as. Fig. 357. — Nymphs and molted nymph skins of thegrape leaf-hopper. Enlarged. GRAPE INSECTS 411
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
