314 



PESTS OF ORCHARD AND SMALL FRUITS 



buds and newly forming leaves. When the pests are numerous, the 

 leaves are killed, and often are blackened through the growth of a fungus 

 on the sticky honeydew secreted by the insect. 



Fig. 482. — Work of the Pear Psylla. Original. 



The adult is very small, dark in color, its body showing characteristic 

 markings. It has four membranous wings. Seen through a hand lens 



it looks hke a tiny cicada, or ''lo- 

 cust." 



The adults hide away for the 

 winter in crevices of the bark, and 

 emerge and lay eggs at the time 

 that the buds are swelling. The 

 young are numerous when the 

 blossoms are falling. There are 

 Fig. 483. -Adult Pear Psylia. En- four or five broods in a season, 

 larged and natural size. Original. The pest may be controlled by 



