. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 14 its life, consumes the soft sap wood immediately under the bark. But when the worm F'"-6- approaches maturity and has become stronger and more robust, it gnaws into ~^ the more solid heart-wood, forming a flattish and not a cylindrical hole such as is formed by most other borers, the burrow which it excavates being twice as broad as it is high, the height measuring the tenth of an inch or slightly over. Within this hole the larva may be almost always found with its tail curled round complet
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 14 its life, consumes the soft sap wood immediately under the bark. But when the worm F'"-6- approaches maturity and has become stronger and more robust, it gnaws into ~^ the more solid heart-wood, forming a flattish and not a cylindrical hole such as is formed by most other borers, the burrow which it excavates being twice as broad as it is high, the height measuring the tenth of an inch or slightly over. Within this hole the larva may be almost always found with its tail curled round completely towards the head, in a manner peculiar to the larvae of beetles belonging to the family Bnpreslkke. It remains in the tree about a year. It is in the latter end of the summer, that the larva jienetrates into the hardwood of the tree: its burrow extending upwards from the spot under the bark where it had previously entered. (3n laying open one of the burrows Dr. Fitch found it more than an inch in length, and all its lower part filled and blocked up with the fine sawdust like castings of the larva. With regard to remedies, Di'. Fitch advises three : " First, coating or impregnating the bark with some sub- tauce, repulsive to the insect. Second, destroying the beetle by hand-picking ; and Third, de- stroying the larva by cutting into and extracting it from its ; His advice is so plain and comprehensive than I cannot do better than quote it at length. " As it is during the mouth of June and forepart of July that the beetle frequents the trees for the purpose of depositing its eggs in the bark, it is jsrobable that whitewashing the trunk and large limbs, or rul>bing them over with soft soap early in June, will secure them from mo- lestation from this enemy. And in districts where this borer is known to infest the apple trees the trees should be repeatedly inspected during this part of the year, and any of beetles, that are found upon them should
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