316 ELEMENTARY STUDIES IN INSECT LIFE 



pack away for summer wrapped in stout paper, to pre- 

 vent entrance of some belated female. 



Remedies.- - Thorough sunning of goods likely to be 

 infested in May and June. Goods which can be readily 

 placed in tight chests can be fumigated with carbon 

 bisulphide. 



Corn. CHINCH-BUG. (Blissus leucopterus Say; or- 

 der Hemiptera.) A small dark-colored bug; wings 

 white, with dark triangular spot on each. The bugs 

 frequently collect on corn-stalks and leaves so as to 

 blacken a part of the plants. They frequently obtain 

 their first spring food in wheat, millet, and other cereals, 

 forsaking them for the corn after the other cereals are 

 harvested. 



Preventive. -Burning all rubbish in fall. Rotation 



of crops. 



Remedy. -Ditching. (See Fig. 109.)- 



CORN-ROOT WORM. (Diabrotica loiifjicornis and D. 

 12-punctata; order Coleoptera.) Stalks of corn stunted; 

 fall over easily. Examination shows many roots sev- 

 ered. Plain greenish-brown beetles, and yellowish bee- 

 tles with twelve black spots on back; to be found in the 

 shooting tassels. 



Preventive. Rotation of crops. 



CORN BILL-BUGS. (Splienoplionis sp. ; order Cole- 

 optera.) Black or brown in color; one-fourth to one- 

 half inch in length ; back marked with longitudinal 

 ridges. Adults attack corn planted after timothy or 

 sod, hiding during day at base of corn plants, boring 

 round holes in stem. 



Remedy. - Fall plowing of land. 



