. The Book of gardening; a handbook of horticulture. Gardening; Floriculture. io86 THE BOOK OF GARDENING. Apple-Bark Beetle {Xyielwrus dispa?-).—Though associated in name with the Apple, this Beetle by no means restricts itself to that tree, but is found also upon Pears, Plums, and other trees. The insects are dark brown or almost black, and the females measure about 3mm. in length, the males being much smaller. The damage they inflict is by boring into the main stems or into the branches, and in the case of young stock the injury is frequently fatal, as the trees are completely tunnelled. The
. The Book of gardening; a handbook of horticulture. Gardening; Floriculture. io86 THE BOOK OF GARDENING. Apple-Bark Beetle {Xyielwrus dispa?-).—Though associated in name with the Apple, this Beetle by no means restricts itself to that tree, but is found also upon Pears, Plums, and other trees. The insects are dark brown or almost black, and the females measure about 3mm. in length, the males being much smaller. The damage they inflict is by boring into the main stems or into the branches, and in the case of young stock the injury is frequently fatal, as the trees are completely tunnelled. The eggs are laid in late spring, and if the gardener later notices minute shot-like holes in the trees, he should suspect the presence of these insects. Such holes are really the exits from the galleries. In Canada, where the insects are plentiful, a wash made of soft soap and a strong solution of washing-soda, the whole of the consistency of paint, is applied on a warm, fine day. This, when dry, which takes place in a few hours, forms a tenacious coating. A peculiarity in con- nection with these insects is that in the galleries they make grows a peculiar fungus, known as Ambrosia, and upon this they feed. Cockchafers and their Allies.—Besides the Common May Bug, or Cockchafer {Melolo7itha vu/ga?-is), the Lesser May Bug {Fhylioperfha hoj'ticola) and the beautiful Rose-Beetle {Cetonia miratti), already noticed, are also destructive to many fruit trees and flowers. The first two are injurious in both the Beetle and grub state; but the last is a pest only as a Beetle. Rosaceous plants are most affected, and the Beetles feed upon the stamens and petals of the flowers of Apples, Pears, Strawberries, &c. ; upon the fruits ; and frequently upon the leaves. At any rate, this is so of both the May Bug and the Lesser ]May Bug. The larvae of these two insects feed also upon the roots of Strawberries, grass, Fir-trees, and a number of other plants. The grubs of the Cockchafer when ma
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