OR IMMEDIATE RELEASE May 31, 1963 



INSECT SURVEY BULLETIN NO. 7 



This is the seventh in a series of weekly "bulletins on the general insect 

 situation in Illinois (fruit insects excepted), prepared by entomologists of the 

 University of Illinois College of Agriculture, Illinois Natural History Survey and 

 cooperating agencies. It is designed to forewarn people in Illinois of impending 

 changes in insect activity and to suggest abbreviated control measures. These re- 

 ports indicate only general trends. Each individual should check his own fields to 

 determine local conditions. 



General : With the cool, wet weather of the past several days, the insect 

 situation has remained quite similar to that reported a week ago. During the past 

 month there has been a small generation of black cutworms in some areas. The number 

 has been low, but the moths from this generation will lay eggs in low, wet areas in 

 corn fields. Watch spots of this type for possible damage in about two weeks. 

 Southern corn rootworm adults are quite abundant. Whether or not they will cause 

 more damage than usual this year remains to be seen. 



Grasshoppers are now hatching in many areas of Illinois. Hatch has just 

 started and will continue for some time. There is enough food to keep these small 

 grasshopper, in the eggbed area. Do not apply control measures now, as it is too 

 early. 



Corn borer moth emergence has begun in central Illinois, but no moth emer- 

 gence has occurred yet in northern Illinois. In general, pupation and emergence of 

 moths are 3 to J days earlier than usual, but corn growth is also slightly more ad- 

 vanced than in previous years. The next 2 to h weeks will be critical for survival 

 of first- generation corn borer, and the survival will determine the importance of 

 corn borer to the 1963 crop. 



Cereal leaf beetle , newly introduced pest of grains and corn, is present 

 in Indiana and Michigan but has not been found in Illinois. 



Caution : Before applying insecticides, read the labels carefully and 

 follow all precautions. This will not only insure personal safety, but will also 

 eliminate insecticide residue hazards. 



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This weekly report was prepared by H. B. Petty and Steve Moore, Illinois 

 Agricultural Extension Service and Illinois Natural History Survey, in cooperation 

 with the USDA Agricultural Service, Plant Pest Control Branch, from information 

 gathered by entomologists and cooperators who send in weekly reports from their own 

 localities. 



HBP:dl 

 5/31/63 



