Purple Scale, Appearance on leaf. 

 (Lepidosaphes beckii) 



so expensive as to make the cost prohibitive. Very little effort 

 was made to control the scale until 1902. Consequently there were 

 eighteen years during which it was allowed to spread, and all citrus 

 trees from Downey north to Pico and east of the Old San Gabriel 

 River for 20 miles had become more or less infested with it. 



In the past 10 years nearly all citrus trees about Whittier, Rivera 

 and Downey have been fumigated each year with very good results, 

 and while the growers have kept up a persistent and costly fight 



