INSECT P^SI S U R V B Y BULLETIN 
rcl - 7 Jane 1, 1927 - T o. U 
OUTSTANDING- EBTDOMQLOGICdl PEAPUHES IE TIE! UPTTED SlkTEG FOR MAY, 1327 
&, Hessian fly survey has teen completed in 2S counties in Kansas. In 
general, the Hessian fly infestation is heavie;- than two years ago, when a 
very serious outbreak occurred. The crop in many fields will he a total loss. 
Despite unfavorable conditions, central Illinois shows about 1 -per cent Hes- 
sian fly infestation. ■ 
luring the first week in hap, cold, wet weather placed the corn in 
central Illinois out of danger from the chinch tug. Later in the month re- 
ports of threatening numbers of this insect were received from Missouri and 
part s of South Carolina. 
The lesser corn stalk borer has appeared ir. very injurious numbers in 
Jackson and nearby counties in the southern part cf "Mississippi. Serious out- 
breaks of this insect occurred in 1921 and 102'-. 
The clover leaf weevil has been much mere abundant than normally 
throughout parts of Kansas and Missouri^, and seriot s damage to the alfalfa 
crop was only prevented by the heavy rains. 
The army cutworm practically ruined alfalfa ani smai] grain crops in 
certain areas of South Dakota, and less serious damage by this poet was re- 
ported from parts of Oregon. 
Over the western third of Kansas ^he pea aphid infestation was assum- 
ing the status of an outbreak in early April. Heavy rains, however, toward 
the last week in the month reduced the numbers of this insect to negligible 
proportions. Reports of serious damage by this insect have been received 
from Utah and southern California. 
iiphids on deciduous fruit trees are reported as generally less abun- 
dant than usual over the Pew York State fruit belt, but from Pennsylvania 
southward through Virginia these insects i-ere raoderately abundant. Aphid s 
in subnormal numbers are reported from the East Central States and the Pacific 
Tor thwe st . 
Codling moths began pupating during the second week in April in Penn- 
sylvania. About 50 per cent were still larvae on May 20. This late trans- 
formation of the codling moth was observed westward across central Missouri. 
In the Pacific Northwest reports from Oregon indicate that 50 per cent of the 
larvae had pupated by May 3. 
Through Pew England and eastern Pew York Stat." southward to Pennsylva- 
nia the eastern tent caterpillar is prevalent enough to "be attracting consid- 
erable attention this year. 
-89- UBRARY 
STATE PLANT BOARD 
