THE MORE IMPORTANT INSECTS INJURIOUS 

 TO CORN IN MISSOURI. 



(By J. M. Stedruan, Professor of Entomology in the University of Missouri and Entomologist 



of tlie Experiment Station.) 



In the annual report of the Missouri State Board of Agriculture 

 for 1902 1 published an article on "The More Important Insects In- 

 jurious to Wheat in Missouri." That article was complete in itself, in 

 so far as the most injurious insects are concerned, but as that annual 

 report has long since been exhausted and camiot now be obtained by 

 anyone, it is advisable to make this article on the corn insects also com- 

 plete in itself. This will necessitate, therefore, the introduction into this 

 article of some of the insects described in the article on wheat insects, 

 because of the fact that they are equally injurious to the corn plant. 

 However, by so doing, anyone obtaining either one or the other of the 

 two' articles will have a complete outline of the more important insects 

 injurious to that particular plant. If the work on wheat insects were 

 not out of print and could be obtained at this time, I should not include 

 in this paper insects discussed in that article. 



We now recognize two hundred and fourteen different species of 

 insects that are injurious to the corn plant. In this short article we will 

 discuss only those that are the more common and destructive, and that 

 the corn growers are likely to suffer from every year in some part of 

 the State of Missouri. 



THE SEED-CORN MAGGOT. 

 Pegomyia ftisciceps, Zctt. 



The seed-corrt maggot is the larva of a fly which measures about 

 one-fifth of an inch in length. This insect is supposed to be an imported 

 one, and is now found scattered over the northeastern quarter of the 

 United States. The larva feeds by burrowing into the roots of radishes, 

 cabbage, turnips, onions, peas, beans and mustard, as well as the seed 

 of corn after it has l>ccn in the ground for several days and has become 

 soaked and swollen and somewhat soft : aufl it also hns been known to 



