GRAIN WEEVIL 249 



from time to time. Grain which has been fumigated is not injurious 

 for feeding or seeding purposes. 



THE GRAIN WEEVIL (Calmdra gramria). The grain weevil 

 has a hard body of a uniform chestnut brown color. The beetle 

 is short, stout-bodied, and about one-seventh of an inch long. The 

 thorax is marked with punctures arranged longitudinally. The eggs 

 are deposited singly in the grain. The female punctures the grain 

 with its snout and in this cavity places its egg. The larva comes 

 forth in a few days, develops in the grain, and emerges as an adult. 

 The life cycle requires about 40 days. 



Treatment similar to that for the grain moth will eradicate the 

 grain weevil. However, such treatment must be much more thor- 

 ough. 



COLLATERAL READING. 



Corn Bill Bugs and Root Louse, 

 Farmers' Bulletin No. 259. 



Corn Smut, 



Farmers' Bulletin No. 69. 



Corn Root Worms, 



U. S. Department (Bureau of Entomology) Circular 59. 

 Sweet Corn (Bacterial Disease of), 



New York (Geneva) Bulletin No. 130. 

 Corn Smut, 



Kansas Bulletin No. 62. 

 Indian Corn, The More Important Insect Injuries to, 



Illinois Bulletin No. 95. 

 Smut of Indian Corn, 



Ohio Bulletin No. 10. 

 The Corn Bill Bugs in Illinois, 



Illinois Bulletin No. 79. 

 Field Experiments and Observations on Insects Injurious to 

 Indian Corn, 



Illinois Bulletin No. 104. 

 The Slender Seed Corn Ground Beetle, 



U. S. Department of Entomology, Circular No. 78. 



Insect Injuries to the Seed and Roots of Corn, 

 Illinois Bulletin No. 44. 

 Iowa Circular No. 2\. 

 Illinois Bulletin No. 133. 



