MASSACHUSETTS 

 AGRICULTURAL EXPERIMENT STATION 



Bulletin No. 375 July, 1940 



Biological Control 

 of Mealybvigs in Greenhouses 



By W. D. Whitcomb 



Mealybugs are among the most destructive pests of gardenias and other 

 greenhouse crops, and their control with insecticides is very difficult and ex- 

 pensive. The imported ladybird beetle, Cryptolacniits moiitrouzicri Muls., has 

 been used effectively as a biological control for this insect. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



