SUMMARY OF INSECT CONDITIONS DURING 1921. 13 



the south from the center of Wayne County through the northwest- 

 ern corner of Johnson County to the northwestern corner of Gibson 

 County. 



In Illinois the infested area was continuous on the east with that 

 of Indiana, the northern boundary extending across the State from 

 1 the southern third of Iroquois County to the northern third of Han- 

 cock County, and on the south to the southern border of the State. 

 The seriously infested area extended from the southeastern corner of 

 Edgar County, through the southern third of Piatt County and the 

 center of Cass County, to the center of Adams County, southward to 

 the southern borders of Galla, Hamilton, Franklin, and Jackson 

 Counties. During the early fall the number of bugs was materially 

 decreased by heavy rains, but the last observation indicated that there 

 were enough of these insects in hibernation to cause serious damage 

 during the coming growing season over a large part of the southern 

 half of Illinois. 



In Missouri the infested area covered the greater part of the 

 State. The only regions from which no reports of infestation were 

 received were Pemiscot County in the southeastern corner, a small 

 area including Tanney and Ozark Counties on the southern border 

 and extending northward to Laclede County, and a few counties along 

 the northern border. The most seriously infested area was con- 

 tinuous with that in Illinois, narrowing in a northwesterly direc- 

 tion. 



A small area in Kansas covering the greater part of Atchison and 

 Jefferson Counties was most seriously infested, while a generally 

 moderate infestation covered the eastern third of the State. The 

 infestation in Oklahoma was not unusual and covered an area extend- 

 ing diagonally across the State, on the north from Woods County 

 to the southern third of Ellis County and south from Delaware 

 County to the southwestern corner of Bryan County. This out- 

 break, though not severe this season, indicated a decided increase 

 of this pest. 



In Xebraska there was an infestation in the southern half of 

 Thayer and Jefferson Counties. A rather unusual outbreak occurred 

 late in the season in the northeastern part of the State in Knox 

 County, the bugs first appearing in barley and later moving to the 

 corn, where they did a considerable amount of damage. 



In Ohio there were apparently more chinch bugs than there have 

 I been since the seasons of 1904, 1905. and 1906, extending over prac- 

 tically all of the western part of the State, the most serious area 

 1 being confined to Defiance, Pauling, and Williams Counties, in the 

 northwestern corner. 



