. Manual of fruit insects. Fig. 15, — Empty codlin-moth cocoons on the under side of a flake of bark;view of the outer surface of the same flake showing the holes made by birds inreaching the larvae. and pears. \ Its most effective natural enemiesare the birds, ^ TEe~ over a dozen species of which are kno^T 18 FRUIT INSECTS downy woodpecker, nuthatch and chickadee destroy greatnumbers of the hibernating larvae, under loose flakes of fact, it requires diligent search to find larvae towards springeven where empty cocoons are abundant. Usually a tell-tale hole through the bark flake into
. Manual of fruit insects. Fig. 15, — Empty codlin-moth cocoons on the under side of a flake of bark;view of the outer surface of the same flake showing the holes made by birds inreaching the larvae. and pears. \ Its most effective natural enemiesare the birds, ^ TEe~ over a dozen species of which are kno^T 18 FRUIT INSECTS downy woodpecker, nuthatch and chickadee destroy greatnumbers of the hibernating larvae, under loose flakes of fact, it requires diligent search to find larvae towards springeven where empty cocoons are abundant. Usually a tell-tale hole through the bark flake into the cocoon explains theabsence of its occupant (Fig. 15). These birds are such efficientaids to man in controlling the codlin-moth that they should. Fig. 16. — Apple and pear fruits with the calyx lobes still expanded ; the righttime to make the first spraying for the codlin-moth. be carefully protected. During the winter they feed in smallflocks, going over the same territory day after day, carefullyexamining every portion of the bark for insect food. Theymay be induced to visit an orchard regularly by tying stripsof beef fat to a few of the branches and the destruction ofcodlin-moth larva will more than pay for the trouble involved. Means of control. When single brooded or when the second generation is onlypartial, the codlin-moth has not been found a very difficult APPLE INSECTS 19 pest to control by spraying with an arsenical poison. Inthe South and portions of the West, however, where twoor more full generations develop, spraying has in generalgiven less satisfactory results. In spraying for this insectadvantage is taken of the fact that the great majority ofthe young larvae enter the apple at the blossom end. Forabout two
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
