Vol. 22 
library 
UNITED STATES DEPARTMENT OF AGRICULTURISTATE PLANT BOARD 
Bureau of Entomology and Plant Quarantine 
INSECT PEST SURVEY BULLETIN 
' May 1, 1942 ~~ No. 3~ 
i REMEMBER PEARL HARBOR j 
THE MORE IMPORTANT RECORDS FOR APRIL 
By the middle of the month the lesser migratory grasshoppers were about 
65 percent hatched in Yuma. County, Ariz. In the southern part of the Texas 
Panhandle hatching was well under way and populations averaged about 40 hoppers 
per square yard on field margins. The Valley grasshopper, Oedaleonotus enigma 
(Scudd.), populations are as great in Kern County, Calif., as they were in 
1940, The lesser migratory gre.sshoprer is so numerous in Imperial County 
that control campaigns are contemplated. 
During the last week in the month Mormon crickets were starting to hatch 
in South Dakota and large numbers were observed about the first of the month 
in Hot Springs County, Wyo., and Pershing County, Nov.. In Washington and 
Oregon no migrations were under way until the middle of the month when migra- 
tions were reported from Oregon. 
Heavy infestations of the coulee cricket were reported from Wasco County, 
Oreg, , about the first of the month, the insects averaging 15 crickets per 
square yard. 
Flights of the adult armyworms were reported about the middle of April 
in central Missouri. 
Infestations of the pale western cutworm were reported from Texas and 
the southern Plains States. 
A general infestation of second-year larvae of white grubs was reported 
from the southern half of Michigan and severe damage to onions was reported 
during the third week in the month in Williamson County, Tex, 
Considerable damage to tobacco seed beds by green June beetle larvae was 
reported during the third week in the month from Gar rand County, Ky. 
Green bug was reported as causing appreciable damage to oats early in the 
month in South Carolina and light infestations were reported from Georgia. In 
Mississippi, oats and barley were almost completely destroyed in some fields. 
In Oklahoma most of the barley and oats and about half of the wheat in some 
areas were destroyed. The infestation was apparently spreading northward 
as colonies were found in wheat fields at Manhattan, Kans., surrounding winged 
females. In parts of Texas, oats, barley, and wheat were completely destroyed. 
The infestation by the first week in the month extended as far westward as 
Brown County and northward to Potter County. 
By the last week in the month most of the chinch bugs in Indiana had loft 
hibernation quarters and by the third week in the month moderately heavy 
flights were occurring in parts of Illinois. the end of the month these 
insects had left hibernation quarters in Iowa, Missouri, Nebraska, and 
destruction of young corn plants was reported at this time in parts of Oklahoma. 
Heavy damage to corn and tomato by the corn earworm in the lower Rio Grande 
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