INJURIOUS AND BENEFICIAL INSECTS OF CALIFORNIA. 



145 



THE CHERRY OR CALICO SCALE 



Lecanium cerasorum Cockerell 



(Fig. 124) 



Description. — The full-grown scales are exceedingly large, often 

 obtaining a diameter of f inch, though the average is slightly over J 

 inch. The general shape is somewhat hemispherical and the bodies 

 may be smooth, very irregular or lobed. The color is rich brown, 

 mottled with creamy-white. The markings are more or less regular 

 and constant as shown in Fig. 124. The entire surface is highly 

 polished and shiny. 



Fig. 124. — The cherry or calico scale, Lecanium cerasorum Ckll. 

 Mature females on English walnut. Slightly enlarged. Collected 

 in Contra Costa County by Geo. P. Weldon. (Original) 



Life History. — The females become full-grown in March and April 

 and begin egg-laying about the first of April. By the middle of the 

 same month the eggs begin to hatch and continue for about thirty 

 days. The young settle upon the leaves and tender branches, but 

 later move to the branches before the leaves fall. Here winter is 

 passed in a half-grown condition. There is but one rather even brood 

 a year. 



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