Smithsonian Rejwrt, 1962. — Christenson 



Plate 5 



Dehydrated carrot medium in which fruit-tly Larvae are reared, an invention of University 

 of California scientists and later modified by U.S. Department of Agriculture entomolo- 

 gists, is mixed with water and nutrients in a large hopper and then poured in trays. The 

 fruit-ffy eggs are added to the surface of the carrot medium. (Photo by R. Wenkam, 

 Honolulu.) 



Preparing the fresh carrot larval medium required by the Mexican fruit fly. 

 courtesy Rockefeller Foundation, Mexico City.) 



(Photo 



