Insects injurious to fruits . es, and the in-sect increases in size, its cottony coating becomes more dis-tinct, the fibres increasing in length and apparently issuingfrom all the pores of the skin of the abdomen. This coatingis very easily removed, adhering to the fingers when young and old derive their nourishment from the sapof the tree, and the constant punctures they make give rise towarts and excrescences on the bark, and openings in it, and,where very numerous, the limbs attacked become sickly, theleaves turn yellow and drop off, and sometimes the tree dies. Remedies.—The v
Insects injurious to fruits . es, and the in-sect increases in size, its cottony coating becomes more dis-tinct, the fibres increasing in length and apparently issuingfrom all the pores of the skin of the abdomen. This coatingis very easily removed, adhering to the fingers when young and old derive their nourishment from the sapof the tree, and the constant punctures they make give rise towarts and excrescences on the bark, and openings in it, and,where very numerous, the limbs attacked become sickly, theleaves turn yellow and drop off, and sometimes the tree dies. Remedies.—The very small four-winged Chalcid fly, Aphelinus mali ^^^- ^^•(Hald.), which is highly magnified inFig. 15, and which has already beenreferred to under No. 1, preys alsoon this woolly aphis. The lady-birds and their larvae, also the larvseof the lace-wing flies and syrphusflies, feed on all species of plant-lice, and are very useful in keeping them within bounds. Thesefriendly insects will be fully treated of under the Apple-. 30 INSECTS INJURIOUS TO THE APPLE. tree Aphis, No. 57. The vigorous use of a stiff brush wetwith the allvaline solution of soap, recoiumended underNo. 2, will also he found very efficient, or a solution madeby mixing five pounds of fresh lime with one pound ofsulphur and two gallons of water, and iieating until thesulphur is dissolved. After destroying those on the trunk,and cutting away all suckers, the earth should be removedfrom about the base of the trunk, the parts below the surfacecleaned, and fresh earth placed about the roots. Spidersdevour large numbers of these lice, spinning their webs overthe colonies and feeding at their leisure. No. 10.—The Apple facetus Say. This is another of the long-horned borers which has beenfound in the larval state boring into the decaying limbs ofapple-trees. The larva, when full grown, is a quarter of aninch long or more, is slender, with the anterior segments en-larged and swollen, is covered with
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