. Insect pests of farm, garden and orchard . - until the second spring,and then directs its course upward, entering and eating the pith ofthe cane for a distance of one to five inches. At the end of thefirst summer the hirva is one-half to three-quarters inch long. Bythe middle of the second summer the larva is full grown andbores an exit hole through the wood and bark just above thecrown, leaving the hole covered by the epidermis only. Thelarva then descends into the tunnel and pupates. The pupa is about three-quarters inch long, reddish-brown, the. Fi(i. 329.— Woik of the rasi)beiTy root-bor
. Insect pests of farm, garden and orchard . - until the second spring,and then directs its course upward, entering and eating the pith ofthe cane for a distance of one to five inches. At the end of thefirst summer the hirva is one-half to three-quarters inch long. Bythe middle of the second summer the larva is full grown andbores an exit hole through the wood and bark just above thecrown, leaving the hole covered by the epidermis only. Thelarva then descends into the tunnel and pupates. The pupa is about three-quarters inch long, reddish-brown, the. Fi(i. 329.— Woik of the rasi)beiTy root-borer: a, two eanes with empty pupacases ])rojecliiifi; iroiii burrows; h, canes showiiij^ opening of tunnelthroufih wliich pui)a have wriggled out. (After Lawrence.) head bears a sharp-pointed process, and each abdominal segmentbears two transverse rows of sharp teeth. By means of these thepupa wriggles itself out of the burrow until it projects from theaperture, and the adult moth emerges. This insect occurs through-out the Middle and Northern States east of the Rockies, is injuriousin Washington and around Vancouver, , and has beenobserved in Colorado and New Mexico. Control.—The only method of control is to pull up the infestedcanes, root and branch, and destroy them ])y Ixirning. As thisis the only means of controlling several pests of cane fruits, the 462 INSECT PESTS OF FARM, GARDEN AND ORCHARD canes should always be gone over in spring and those showingany injury examined and removed if affected. The Raspberry Cane-borer * If the
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