. Bulletin. Agriculture. 154 MAINE AGRICULTURAL EXPERIMENT STATION. I915. The young hoppers are light green or yellowish and occur especially upon the underside of the leaves and usually ranged alongside the mid- rib or larger veins of the leaf. The development of the larvae is rather rapid and for ]\Iaine it is probable that at least two generations may be produced as both adults and n3miphs were found in mid-summer. The distribution of this species covers all of the state and its range of food plants is apparently about the same as for other sections as it was noted upon a number of differen
. Bulletin. Agriculture. 154 MAINE AGRICULTURAL EXPERIMENT STATION. I915. The young hoppers are light green or yellowish and occur especially upon the underside of the leaves and usually ranged alongside the mid- rib or larger veins of the leaf. The development of the larvae is rather rapid and for ]\Iaine it is probable that at least two generations may be produced as both adults and n3miphs were found in mid-summer. The distribution of this species covers all of the state and its range of food plants is apparently about the same as for other sections as it was noted upon a number of different host plants, although especially upon apples, potatoes and beans. Upon the latter it was found fairly common at Highmoor Farm and Houlton. At Highmoor Farm its occurrence on beans was indicated by very distinct spots upon the leaves. The attack clearly showing that a large abundance of the hoppers would result in a very distinct withering of the plants. The treatment of this species depends upon the plants affected, the use of two measures, the spraying and the so-called "shield" method. The success of the spraying for the species has been somewhat varied, the writer having found in treating an outbreak on potatoes that a spray of kerosene emulsion seemed to be very effective, while some observations have shown that the results were quite unsatisfactory, especially as applied to the adults. Dr. Hasemann recommends for apple a very heavy spray especially while the insects are in the nymphal stage in the early part of the season so as to secure practically exter- mination and prevention of the later broods. With potatoes a special spray which was directed so that the adults in leaping from the plants were certainly wet by the solution seemed however, very effective and an adjustment of the spraying machinery so that a similar result could be obtained on apple trees or nursery rows, ought, it seems to me, to be equally effective. The shield method consists in the use o
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