INSECT PEST S U R V E J 3 U L L E- T 'I N 
Vol. 17 October 1, 1937 No. S 
THE MORE IMPORTANT RECORDS FOR SEPTEMBER" ii 
At the last of September grasshoppers were still doing damage from 
Illinois to southern Minnesota and southward to Missouri and' Oklahoma-. They 
also continued to he destructive in the Great Basin. Over much of the in- 
fested territory egg laying was well under way. 
Scattering reports of damage by wireworms were received from Pennsyl- 
vania, North Dakota, and Washington. 
During the month outbreaks of the garden webworm occurred in Indiana 
and Michigan. The principal damage was to alfalfa. 
Hessian fly is abundant in volunteer wheat in parts of Ohio, Wisconsin, 
North Dakota, and eastern Missouri. 
Infestation by the European corn borer in 10 counties in Wisconsin was 
found during the summer. The. insect is building up heavy populations in 
western Pennsylvania. 
Heavy damage to small grain and alfalfa seed by Say's stinkbug was re- 
ported from Utah and Arizona. 
Late in summer a large codling moth population developed from northern 
Ohio to northeastern Kansas. 
The flatheaded apple tree borer was seriously damaging apple trees from 
Indiana and Nebraska southward to Oklahoma and Missouri. 
The oriental fruit moth was more abundant in Ohio than it has been for 
several years. It was also reported as abundant in Connecticut and as doing 
some damage in Georgia and Mississippi. 
Heavy infestations of the grape leafhopper were reported from Kern 
County; Calif., and of the grape leaf folder from the San' Joaquin Valley. 
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