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Ohio 
Minnesota 
North Dakota 
CEREAL AID FORAGE-CROP INSECTS 
WHEAT 
HESSIAN ELY ( Phytophaga destructor Say) 
T. H. Parks (July): The Hessian fly has about doubled in 
population as determined through the annual wheat insect survey. 
No serious injury occurred to the present crop, which promises 
to "be the largest in many j^ears. The heaviest fly infestation 
is in the northeastern counties though it is now present in 
threatening numbers in nearly all sections of the State. 
WHEAT STEM MAGGOT ( Meromyza americana Pitch) 
A, G. Ruggles and assistants (July): More abundant than 
usual. As high as 10 per cent loss being credited to this 
insect in many wheat fields. (Abstract, J.A.H. ) 
J. A. Munro (July IS); The wheat stem maggot has been 
noticeably present in the eastern counties of the State. Many 
fields in Traill County were reported to have suffered a loss 
of 10 to 12 per cent from this pest. A survey of fields in 
the Fargo vic.inity shows a 2 to 3 per cent loss. In Richland 
Coonty it is reported as causing a general loss of 0.5 to 1 
per cent. 
Nebraska 
Utah 
Oregon 
Utah 
M. H. Swenk (July 1): Daring the third week in June a few 
reports of an abundance of the wheat stem maggot were received 
from east central Nebraska, from Dodge Cou.nts'- to Greeley County, 
but the damage was not widespread or very serious. 
WHEAT STEM SAWELY ( Cephas cinctus Nort.) 
G. P. Knowlton (July 6): Six per cent of the culms in one 
wheat field examined at Hunter are infested by the western grass 
stem sawfly. 
WHEAT JOINT WORM ( Harmolita tritici Pitch) 
D. C. Mote (July 13): T. H. Chamberlin reports that adults 
had practically disappeared from the fields on June 6 in the 
Molalla district, although stragglers were caught as late as 
June 12. The parasite Surytoma parva Phillips was very abundant 
on 4 botli the 3th and the 12th, but very . ncarceon the 2?th. 
First adults of the parasite Ditropinotus aureovirdis Cwfd, June 12, 
Their ^a no t all issued from the overwintering stubble by June 27. 
WHEAT STRAW WORM ( Harmolita grandis Riley) 
G. P. Knowlton (July 21); Wheat straw worm counts made up to 
the present time are somewhat lower than the average for last year. 
