CIRCULAR No. 418 DECEMBER 1936 



} STATES DEPARTMENT OF AGRICULTURE 

 WASHINGTON, D. C. 



AND PREDATORS OF THE MEXICAN 

 BEETLE IN THE UNITED STATES 



enior entomologist, and B. J. Landis, assistant entomologist, 

 <ek Crop and Garden Insect Investigations, Bureau of 

 Plant Quarantine 



CONT 



Page 

 . .... 1 



ENTS 



Coleoptera 



Hemiptera 



Miscellaneous predators .. 



Page 

 6 



dators of the Mexican 

 1 



8 



11 



4 





11 



4 



Literature cited _ 



12 



6 













INTRODUCTION 



bean beetle {Epilachna varivestis Muls.) 1 has been 

 Lipeded by parasites or predators in its spread 

 isively cultivated areas of the United States. Grad- 

 a considerable list of natural enemies has been 

 ough its longer establishment in certain areas and 

 ervation by entomologists, and these natural enemies 

 liscussed. 



■ 1 Mk 



Sb 



^SITES AND PREDATORS OF THE MEXICAN BEAN 

 BEETLE 



nemies of the Mexican bean beetle referred to in 

 lpublished records may be divided into three classes : 

 ad predators actually observed attacking the bean 

 L ; (2) predators feeding on the beetle in confinement ; 

 s and predators attacking the bean beetle in Mexico 

 l certain parts of the United States where they may 



potential enemies. 



enemies, classified as above, are shown in tables 1 

 y, which also show the localities where they were 

 $ stages of the bean beetle attacked, and, in the last 

 :ce of the information, the letter X indicating un- 

 ctions by the authors or others mentioned iii the 

 lie numbers in parentheses referring to the list of 

 on page 12. 





is Epilachna corrupta Muls. 



