PABT III. 



FRUIT CROPS 



AND 



INSECTS THAT INJURE THEM. 



APPLE. 



American Blight (Woolly Aphis). 



ScJiizoncura liinhjera, Hausm. 





Woolly Aphis; infested Apple-spray, nat. size; wingless viviparous female 

 and young clothed with cottony fibres above, and small egg-bearing female 

 beneath the spray ; pupa with little cottony growth ; all magnified.* 



The attack of the Apple-bark Plant-louse, or Woolly Aphis, 

 commonly known as American Blight, may be easily detected 

 by the woolly or cottony growth on the insects, giving the 



* The above figures are acknowledged, with thanks, as after 1 and 3, Plate CV., 

 and 2 and 5, Plate CVL, in ' Brit. Aphides,' vol. iii., by G. B. Buckton, F.R.S. 

 The size of the wingless viviparous female is given (p. 89 of same volume) as 

 1.77 X 1.39 millemetres, that is, something under a twelfth of an mch m length 

 by rather less in breadth. — Ed. 



