INSECTS INJURIOUS TO APPLES. 



131 



The Apple-worm, (Carpocapsa pomonana,) attacks the fruit, 

 oy entering at the blossom, and feeding at the core. In some 



Fig. 106. 



years, it has been so common, as seriously to injure the 

 quality of the crop. The best preventive is to allow swine 

 to pick up the wormy fruit as it falls, thus destroying the 

 enclosed insect, and preventing its spread. 



The above figures, (106,) exhibit the apple-worm in its 

 different stages ; a, the larva ; b, the same magnified ; c, 

 the cocoon ; d, the pupa within the cocoon ; e, f, the perfect 

 insects; g, the young larva, just hatched, after having been 

 deposited within the calyx ; h, i, Jc, I, the progressive work 

 of the larva within the apple, till it escapes.* 



The Wooly Aphis, {Aphis lanigera,) a European insect, 

 falsely termed American blight, is a species of aphis or 

 plant-louse, covered with long, white, cottony hair. In 

 England it has proved very destructive ; and on young trees 

 in this country it has done some injury. It is destroyed 

 by whale-oil soap, and by lime-wash. Other species of 

 aphis often infest the 3'oung leaves ; they are easily killed 

 by a solution of whale-oil soap, which may be applied by a 

 syringe or by immersing the branches. 



* The curculio or plum weevil, when very numerous, attacks the apple, and its pe- 

 culiar crescent-shaped incisions may be perceived on the skin of tender varieties. 

 The larva, however, rarely reaches the core. But the apple worm never attacks the 

 plum, which has no permanent calyx for the lodgment of its eggs. 



