INSECT PEST SURVEY BULLETIN 
Vol. IS August 1, 1933 No. 6 
THE MORE IMPORTANT RECORDS POR JULY 
By the end of July effective "baiting for grasshoppers gave a very high 
degreo of control throughout most of the infested area, especially where 
idle lands did not "breed tremendous populations. In the southern and 
western counties of North Dakota, and in counties of South Dakota west of 
the Missouri River, as well as in the eastern part of Wyoming and in 15 
eastern counties of Montana, enormous populations of Molanoplus mexicanus 
developed in idle lands in which effective baiting was not accomplished. 
General migrations of adults "began about July h and were observed at 
different times until about the latter part of the month. The flights 
were in northwestern, western, and southwestern directions from the western 
portions of the Dakotas, eastern Montana, and eastern Wyoming. 
The Mormon cricket infestation of south-central North Dakota is very 
much heavier than it was last year, with but little damage occurring, 
however. Contiguous to this infestation a light infestation extends almost 
across the State of South Dakota. A similar light infestation occurs In 
central and western Nebraska. Heavy migrations arc occurring in the Judith 
Basin in Montana and some damage is being done in parts of Wyoming. Heavy 
infestations, representing migrations moving down from mountainous areas in 
which control was not conducted this year, are occurring at points in 
southern Idaho, with damage being reported in places to alfalfa seed pro- 
duction. In Nevada there arc several areas of rather heavy infestation, 
while in Utah, eastern Washington, and northeastern Orogon are several 
scattered outbreaks. The infestation in Colorado has been reduced to in- 
significant numbers. The crickets, for the most part, are mature and egg 
laying is well under way although apparently it has not reached its peak 
over most of the infested area. 
Several species of wireworms were reported as doing damage in limited 
areas in South Carolina, in the Great Plains States, and California. 
Japanese beetle was much more abundant than during preceding years in 
southwestern New England, southeastern New York, in Delaware, northeastern 
Maryland, and the Eastern Shore of Maryland and Virginia. 
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