. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 0- varieties are raised to extend the season; but the " Wilson" is the staple. Unfortun- ately it adds to its many excellent qualities that of extreme susceptibility to insect attack, and of all the varieties grown in New Jersey this only is killed down in a lew years unless carefully looked after. I began my studies on the insect pests of the black berry in the early part of the present year, before yet the canes had begun to leaf out, and found that all the pests infested cane or
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 0- varieties are raised to extend the season; but the " Wilson" is the staple. Unfortun- ately it adds to its many excellent qualities that of extreme susceptibility to insect attack, and of all the varieties grown in New Jersey this only is killed down in a lew years unless carefully looked after. I began my studies on the insect pests of the black berry in the early part of the present year, before yet the canes had begun to leaf out, and found that all the pests infested cane or root. One of the chief pests is the well known Agrilus ruficollis, or red-necked blackberry cane borer (Fig. 10). Its life history has been worked out by others,and I have nothing of any importance to add. The well-known galls (Fig. 11) usually indicate the position of the borer, and how to get rid of it is the question. I say the galls usually indicate the position ofS|the borer, because, though there can be no gall without a borer, we can have a borer without a gall. If a gall be split the length of the cane it will be seen that the wood is not involved in the gall growth, but only the bark. The insects emerge from the canes iu early summer, May 25 to July 10, the month of June being the time of greatest abun- dance. The egg is laid by the female at the base of a leaf stalk, and I believe it is not thrust into the tissue, but is simply laid at the base of the stalk or in the bud there starting. It was not until late in July that any larvfe were found. The first sign of their presence was a dead bud at the leaf axil, and where the stem was carefully examined almost every dead bud showed traces of having been eaten into, the minute and very slender young larvse being found under the bark near by. Usually they run up the main shoot; but where laterals have become well developed they often go into these, especially where more than one egg was laid in the same place. In neglected
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