606 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



In Florida the State Plant Board collects, rears and distributes 

 these lady-bugs, to the growers, a nominal charge being made for 

 the service. The beetle is commonly called the Vedalia or the 

 Australian lady-beetle. 



There is present in California another effective parasite of the 

 Cottony Cushion Scale, a true fly, of the family Agromyzidcs 

 (Gryptochaetum monophl&bi) . This was introduced from Australia 

 the same time as the Vedalia beetle. 



Control of Scales in Citrus Groves 



Since the control measures employed for scale insects are 

 essentially the same as those for the whitefly and the mealy-bugs 

 discussion of them will be deferred and will follow the discussion of 

 those insects. 



Mealy Bugs * 



Several species of mealy-bugs occur in citrus plantings as well 

 as on truck and other crops in the South and on greenhouse plants 



FIG. 530. Lemon infested with the common mealy-bug. 

 After Woglum and Neuls. U. S. Dept. of Agr. 



and some outdoor ornamentals farther north. The most impor- 

 tant of these is the Citrus Mealy-bug f and since they all have 

 much the same habits and appearance they will all be treated 



* Family Cocddce, Sub-family Dactylopiincz. 

 f Pseudococcus citri Risso. 



