396 



THE MONTHLY BULLETIN. 



THE PURPLE SCALE. 



The purple scale is another important insect enemy of the citrus tree. 

 It occurs scatteringly throughout the coast citrus belt of Southern 

 California, and also in various places in the San Joaciuin and Sacra- 

 mento valleys. It attacks leaves, branches and fruit of the citrus tree. 



Fio. S3. — The purple scale, Lepidosaphes beckii, on leaf. (Essig, Bui. 2 C, Pom. CI.) 



causing the branches to die and the leaves to drop. Scale incrusted 

 fruit is common where the scale is a pest, and should be excluded from 

 the market, as the appearance of the fruit is much to the growers' 

 discredit. 



The female scales are long and oyster shaped, being from one- 

 sixteenth to one-eighth inch in length, and are of a reddish brown or 

 purple color (Fig. 83). 



Fumigate with hydrocyanide acid gas, using full schedule No. 1. 



