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HESSIAN FLY 
The very favorable winter conditions that prevailed throughout the East 
Central States resulted in the appearance of the Hessian fly ( Phy t o-nhaga 
destructor Say) in very threatening numbers in many parts of this region. 
The extremely cold weather that followed during the middle of March over the 
eastern part of this region undoubtedly materially reduced the number of these 
insects in places. In Illinois, Missouri, and Nebraska, however, the insect 
was not seriously affected and in general throughout the Winter Wheat Belt 
this insect was more numerous than it has been in several years. The late- 
summer surveys to ascertain the population of flies capable of infesting the 
fall-planted grain indicated unusually high populations from central Pennsyl- 
vania to southeastern Nebraska and central Missouri. In infestations over 
much of this territory over 30 per cent of the straws were infested. In New 
York State the infestation was only moderate, running from 4 to 15 per cent, 
but in Pennsylvania the situation was much more serious. That part of the 
State lying south of Union and Columbia Counties and east of Blair and Eedford 
Counties harbored populations running from 30 to 60 per cent. A similarly high 
infestation was recorded from the southwestern corner of the State and an 
infestation of over 30 per cent along * i^fcs entire western border. This 
condition also extended southward into all of the wheat-growing counties in 
Maryland west of the Chesapeake Bay. The infestation on the eastern shore of 
this State and in Delaware was considerably lighter. In Ohio a belt of heavy 
infestation extended from the northern part of the State in an ever widening 
band until it covered the entire western border of the State. The heaviest 
part of this infestation was in the counties surrounding Wayne County. This 
band continued westward over the greater part of central and north-central 
Indiana with very heavy infestations in the west*-Gentral ^ts^t".«f the. .State 
from- White to Parke Counties. Another area of heavy infestation was in the 
southwestern corner of the State. In Illinois the band narrowed to cover 
about four tiers of counties from Vermillion and Lawrence Counties on the 
east to Greene and Jersey Counties on the west. As a whole in this State 
the infestations were heavier in the eastern than in the western counties. 
The band proceeded, though decidedly less intense, across central Missouri 
and into northern Kansas, passing on into southeastern Nebraska. 
CHINCH BUG 
The very favorable winter conditions that prevailed over the greater part 
of the East Central and West Central States resulted in large populations of 
the chinch bug ( Blissus leucp-pterus Say) passing the winter successfully over 
much of this area. Cold rains of early May were somewhat detrimental to the 
insect, but the favorable weather which followed more than offset this check. 
Serious damage was done throughout central and western Illinois, with less 
severe damage across central Missouri and southeastern and south-central 
Kansas into the entire central area of Oklahoma. Damage was generally light 
in Indiana with the single exception of a small outbreak in the northeastern 
corner of the State in PeKalb, Allen and Huntington Counties, which extended 
across into the northwestern corner of Ohio. This insect became troublesome 
very much north of its usual range. Heports of damage have been received from 
the southern two tiers of counties in Michigan; the southern two tiers of 
counties in Iowa, as far west as Taylor and Union Counties, and from the south- 
ern tier of counties of Nebraska, going somewhat farther north in the southeast- 
ern part of the State. Isolated outbreaks occurred in the northwestern corner 
