318 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



from one tree to another. At times the crew is transferred to a distant 

 orchard in the middle of the day and they take the supply of mealy bugs along. 

 Even though the crew is not transferred directly to a clean orchard, individual 

 members constantly wearing the same clothes may be able to distribute as they 

 go for a week or more, before their clothes are entirely free. Too much care 

 can not be taken when we regard the seriousness of this pest and this is one 

 problem that is important. See same under quarantine. 



Cultivators and ll'agons go under the same head with the boxes and 

 picking crews and must be as carefully guarded. Driving through an infested 

 district with a cultivator or a wagon always brushes off mealy bugs. In this 

 way it does not take long to infect a whole orchard. The Blanchard orchard 

 is an excellent illustration showing the combined effects of the picking boxes, 

 cultivation, picking, and hauling as distributing agents. All parts of the 

 orchard were infected badly before the insect really became observable. I 

 recently examined a wagon, in which cultivating implements had been taken 

 Irom an orchard infested with mealy bug, to a clean orchard. On the side- 

 boards were counted 5 large adult female mealy bugs. In the bed were three 

 infested oranges which had dropped off while driving through the infected 

 orchard. The wagon was allowed to stand all day in the clean orchard with 

 enough mealy bugs to infect the 10 acres in the course of a few years. 



Infected Fruit. — Travellers and visiting relations contribute to the spread 

 of such pests by carrying home infected fruit or by throwing the peel along 

 the roadside near a clean orchard. A rind thrown from a car window in 

 a citrus orchard may be sufficient to infest a neighborhood. 



KNOWN NATURAL ENEMIES. 



PRBDACEOUS. 



Ladybird Beetles ( Coccinellidae) 

 Cryptolsemus montrouzieri.* 

 Rhizobius ventralis. 

 " lopantha. 

 Hyperasis lateralis. 

 Scymnus guttulatus. 

 " sordidus. 



Lacennngs ( Neuroptera ) 



Chrysopa occulta. (Green Lacewing.) 

 Symphcrobius angustus. ( r.rown I.acewing.) 



/'./A'.^/.S777r. 



ffxnicnnptcra. 



Chrysoplatycerus splendens How. 



Lysiphelbus citraphis Ashm. 

 nif>tera. 



Li'ucopis bella T.oew. 



