. Manual of vegetable-garden insects. ehind margin (Fig. 196). The jxisteriirfemora are greatly enlarged, giving theinsect the power to jump a considerabledistance. The beetles pass the winter insheltered places under rubbish and arefound in the spring on plantain and other ^flei^beetie^x T-i)*weeds as well as on the foliage of apple,wild cherry and maple. As soon as their cultivated foodplants come up or are transplanted into the field, the\ aresubject to attack. Tobacco and cabbage plants may beseriously injured in the seed-bed. On Long Island thebeetles begin egg-laying the early part of Ju
. Manual of vegetable-garden insects. ehind margin (Fig. 196). The jxisteriirfemora are greatly enlarged, giving theinsect the power to jump a considerabledistance. The beetles pass the winter insheltered places under rubbish and arefound in the spring on plantain and other ^flei^beetie^x T-i)*weeds as well as on the foliage of apple,wild cherry and maple. As soon as their cultivated foodplants come up or are transplanted into the field, the\ aresubject to attack. Tobacco and cabbage plants may beseriously injured in the seed-bed. On Long Island thebeetles begin egg-laying the early part of June and in ]\Iainethe latter part of the month. The egg is about ttct inch inlength, elongate ellipsoidal and white in color. The eggsare deposited in the soil around the plants. At this time thebeetles are sometimes found four or five inches in the groundbut whether they enter the soil for egg-laying is not larvai feed on the roots, tubers and underground stems ofthe plant and are sometimes found on the piece of potato used. 316 MANUAL OF VEGETABLE-GARDEN INSECTS for seed. The full-grown larva is about i inch in length witha brown head and yellowish brown thoracic shield. Thelarvae are sometimes found with the front part of the bodyinserted into the tuber, from which the remainder of the bodyprojects. The tissue surrounding the larva in the tuber be-comes hardened and turns blackish. Under some conditionsthe presence of the grub causes an abnormal growth on thesurface of the tuber about i to i inch in diameter, low, convexand scurfy at the top. Tubers so affected are called pimplypotatoes and their market value is considerably larvae have also been found feeding on the roots of tomato,eggplant and the common nightshade. When mature theytransform within small earthen cells to whitish pupse aboutTS inch in length and in six to eight days transformation tothe adult takes place. On Long Island the beetles of the newbrood begin to appear in early July and in ]
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1918
