. Annual report. 1st-12th, 1867-1878. Geology. The Vine-Leae Hopper, Erythionenis vitis Harris. (Fig. 55).—Swarming upon the 1 leaves in August and early September; a small, pale yellow leaf-hopper, with two broad i( red bands on the wings, causing the leaves to wither. j This little insect, which I have seen abounding in the vineyard ot^ the Massachusetts Agricultural '^ College early in September, when ' the grapes were ripening, is pale yellow, with two broad red bands and a third dusky one at the !^ apex. It is a little over a tenth ^ of an inch long. It swarms on * the leaves in August, p
. Annual report. 1st-12th, 1867-1878. Geology. The Vine-Leae Hopper, Erythionenis vitis Harris. (Fig. 55).—Swarming upon the 1 leaves in August and early September; a small, pale yellow leaf-hopper, with two broad i( red bands on the wings, causing the leaves to wither. j This little insect, which I have seen abounding in the vineyard ot^ the Massachusetts Agricultural '^ College early in September, when ' the grapes were ripening, is pale yellow, with two broad red bands and a third dusky one at the !^ apex. It is a little over a tenth ^ of an inch long. It swarms on * the leaves in August, puncturing ' them with its tiny beak and draw- FiG. 55.—Vine-Leaf-Hopper. ing out the sap until the leaves ] turn yellow and become dry and stiff. The young appear in June, and 2 the leaves are thus depleted for a period of nearly three months. They I wither, and hence the plant becomes enfeebled, little new wood is formed, '" the canes do not ripen well, and the fruit is stunted and easily mildews, while in a few years the vines become exhausted and barren. The leaf- hoppers hibernate, and lay their eggs in the spring. As a remedy, wash the vines with soap-suds in June, and, if possible, fumigate the leaves with tobacco. The Red-Shouldered Sinoxylon, Sinoxylon hasillare Lay. (Fig. 56).—Boring under [ the bark and into the middle of grape-stems ; a short, thick maggot. This blight insect sometimes bores under the bark of the grape, as well as in the heart of grape-stems. It also tunnels in apple-trees and in the shag- bark hickory, boring holes straight toward the heart of the tree, and changing to tbe pupa state at tbe inner ends of their burrows. (Harris.) pupa; c, ; (After As a remedy, burn the infested twigs- or Fig. 56.—Red shouldered Sinoxylon larva; &, Riley.) ?. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations m
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishe, booksubjectgeology
