Bul. 92, Bureau of Entomology, U. S. Dept. of Agriculture. PLATE VI. 



DISSEMINATION OF WHITE FLIES. 
Fig. 1.—Nursery citrus trees infested with white flies set out in an isolated noninfested grove 
without having leaves removed. Fig. 2.—Buggy inan orange grove; buggy top full of adult 
white flies ready to be carried to other groves. Fig. 3.—Train at station; adult citrus white 
flies swarming from near-by umbrella China trees into coaches ready to be carried for miles 
down the Florida east coast. (Original.) 

