584 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



these streaks coalesce and form a dark band around the center, 



while other individuals are occasionally entirely red or black. 



Frequently trees become badly encrusted with these scales, but 



rarely are they killed by them. The fruit on badly infested 



trees is, however, 

 poorly developed, in- 

 sipid, and covered 

 with the sooty fungus 

 so as to be almost 

 unsaleable, and the 

 trees are stunted and 

 rendered more liable 

 to the attack of other 

 insects. 



Life History . 

 There is but one gen- 

 eration a year. In 

 the winter they are 

 mostly nearly grown 

 female scales. These 

 mature early in the 

 spring and deposit 

 their eggs in a mass 

 beneath the body, 

 which forms the hard 

 scale above them. In 

 Missouri the eggs 

 hatch about June 

 10th, and continue to 

 hatch for a month. 

 The male scales are 

 much smaller than 

 FIG. 515. The Peach Lecanium enlarged. (After the females, elongate, 

 Simanton.) slightly convex, and 



greenish-white in color. Late in July the winged males appear 

 and live about a week. The young female scales continue growth 

 during the summer and hibernate when about two-thirds grown. 

 Control. Lime sulphur seems to be ineffective against this 

 insect but orchards which are sprayed year after year with it 



