﻿146 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



The development or life-cycle begins about September and the broods 

 are still (in January) hatching. Adults are coming out every day in the 

 laboratory breeding cages, and there are still plenty of the larval stages which 

 go to show that some adults may emerge late in the spring. 



In general the life-cycle is much longer than that of the Citrus Mealy Bug 

 and the rate of multiplication much lower. Although a native of this section 

 and here prior to the Mealy Bug it has never been able to cope with it. This 

 is certainly due to a secondary internal parasite which attacks the pupa and 



Figure 59. Sympherobius angustus; A, larva; B, early, and C. late, stages of pupa 



destroys it. Large numbers of parasites have been hatched from it, and will 

 be described later. 



While we can never hope for it to destroy the Mealy Bug by itself, we can 

 always look for quick and effective work wherever it has a chance. A combi- 

 nation of several as effective enemies as this one could do the work. Many 

 different enemies for the Mealy Bug must be obtained, and only when they are 

 all finally established and working together will we begin to really experience 

 relief through their efforts. 



