-509- 
CEREAL AND FOEAGS-CROP INSECTS 
Maryland 
Ohio 
Indiana 
Illinois 
WHEAT 
HESSIAN ELY ( Fhytophaga destructor Say) 
E. N. Cory (September 25): The Hessian fly is scarce. 
T. H. Parks (September 26): The Hessian fly is moderately 
abundant • 
J. J. Davis (September 25): The Hessian fly is moderately 
abundant. Reported abundant in volunteer wheat in sections of 
southern Indiana. 
W. P. Elint (August): The Hessian fly survey of Illinois 
made each year during the first part of August by the Natural 
History Survey and the Federal Bureau of Entomology, cooperating, 
shows the following conditions in the different wheat-growing 
areas of the State. 
On the whole, there has been a slight decrease in the abundance 
of the fly in northern and east-central Illinois. In these 
sections of the State the fly is relatively scarce and it is not 
likely that any damage will occur. In the southern end of the 
State there is a moderate infestation, with conditions approxi- 
mately the same as last year, showing a slight decrease in all 
the wheat-growing sections. In east-central Illinois there has 
been a slight decrease with a very light infestation in this 
section. 
In the west-central part of the State, in the section running 
from Randolph, Perry, Clinton and .Marion Counties on the south 
to Hancock, McDonough, Eulton and Peoria Counties, on the north, 
and on the east to Tazewell, Sangamon and Christian Counties, 
there is an area of moderately heavy to heavy infestation. 
Another area of heavy infestation is found on the east side of 
the State, centering in Crawford County, 
Insects that feed on the Hessian fly are moderately abundant 
in most sections, parasitism being about 50 per cent in western 
and southern Illinois and somewhat less in the northern part of 
the State. 
The recent rains have started the fly coming out and laying 
Q ggs, and if these rains continue, wheat sown on the normal dates 
for highest yields should escape any serious infestation. If 
the present rainy period is followed by another period of drought, 
rains not occurring again until the latter part of September, the 
fly will come out a little later than usual and serious infesta- 
tion will occur for a week or ten days after the normal date of 
seeding for highest yi^ld. 
