. A manual of injurious insects with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit. To which is appended a short introduction to entomology . er the full flow of sap of the living trees, noryet have laid long enough for the inner bark to be exhausted. Pine-bud Tortrix turiunana, Curtis ; lietinia turionanci, Hiibn. The caterpillars of the Pine-bud Moth are injurious toScotch Fir, Silver Fir, and various species of Pine, by feedingin the buds, and especially inside the terminal bud of theleading shoot. By this means, as some of the bu
. A manual of injurious insects with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit. To which is appended a short introduction to entomology . er the full flow of sap of the living trees, noryet have laid long enough for the inner bark to be exhausted. Pine-bud Tortrix turiunana, Curtis ; lietinia turionanci, Hiibn. The caterpillars of the Pine-bud Moth are injurious toScotch Fir, Silver Fir, and various species of Pine, by feedingin the buds, and especially inside the terminal bud of theleading shoot. By this means, as some of the buds are killedand the leading shoot is often destroyed and its place takenby a side one, the uniform growth of the branches is inter-fered with. PINE-BUD TORTRIX MOTH. 247 The description given of the mode of life of this TortrixMoth, the 0. turionana of Curtis and Stephens,* by , is as follows :— The larvae are hatched from theeggs deposited by the females in July, in the course of tenor twelve days, when they immediately penetrate into the bud,the centre of which they destroy; and, descending throughthe heart of the bud to its base, they then attack the adjoining. Shoots injured by cateriMllars of Tortrix. Pine-bud Torli:;, , magnified, with lines showing natural size. buds in the same manner; not only destroying the centralshoot, and thus preventing the straight and elegant growth ofthe branches, but also killing the side buds, and even pene-trating into the turpentine tubercles with which some ofthese Firs abound. By the end of October the caterpillar isfeasting on the interior of the largest middle bud, beginningbelow that which was formed for the following year, in whichit spends the winter, renewing its ravages in the spring. . The caterpillar is full grown about the end of June, when itdescends to the lower part of the burrow which it has formedin the bud, and is there transformed into a shining chestnut-brown chrysalis, which, like those of mo
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