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JAPANESE BEETLE 7 
The range of the Japanese "beetle ( Popillia japonica Newm.) consists 
of two quite distinct subdivisions: One, the area of continuous infestation 
which the beetle has come to occupy as a result of its natural spread fro::, 
the original point of introduction; the other, the area of discontinuous or 
localized infestation which resulted primarily through artificial means of 
transportation, with the consequent establishment of colonies isolated from 
each other and from the main body of population. The former area is largely 
confined to portions of New Jersey, Pennsylvania, and Delaware, with minor 
protrusions into adjoining sections of Maryland and New York. The area of 
discontinuous infestation has "been extended as far north as Waterville, Me., 
foodsville, N. H., Burlington, Vt., Watertown, N. Y., westward to Detroit, 
Mich., and Columbus, Ohio, and southward through Princeton, W. Va., and 
Asheville, N. C, to Florence and Greenville, S. 0. A still more southern 
limit was reached in the latter State at Charleston, where four beetles were 
taken in 1931, but where none has "been taken since, despite the fact that 
efforts to trap them there have been made each year. Owing probably to the 
general reduction of beetle population during 1S33, many parts of the area 
of continuous infestation show only a slight advance beyond the limits 
reached in 1932. This was particularly true toward the north. The area of 
continuous infestation for the first time penetrated into Maryland. Probably 
the most striking expansion of this area was that which took place in 
Delaware. The most impressive feature of the infestation in 1933 was the 
great reduction in the beetle population in the section that has been longer 
infested compared with the number present in 1932. 
ASIATIC BEETLES $ 
There is almost no change in the known distribution of the Asiatic 
beetle ( Anomala oriental is Waterh.), and, aside from the record of collections 
of the Asiatic garden beetle (Autoserica castanea Arrow) in Aiken, S. C, 
nothing of great importance has been found in the distribution of this 
beetle. 
ELM LEAF BEETLE 
In scattered localities in New England, the Middle Atlantic States, and 
East Central States the elm leaf beetle ( Oalerucella xanthomelaena Scfar.) was 
very abundant. At one place in Virginia the larvae were badly infected with 
a fungous disease and their dead bodies around the bases of trees were so 
numerous that the odor was offensive. Spraying for the control of this pest 
in the larger towns and cities was quite generally practiced. We also re- 
ceived a report of heavy defoliation in the Yakima Valley of Washington and 
the Yosemite Valley of California. 
BASK BEETLES 
An epidemic of the western pine beetle ( Dendroc tonus brevicomis Lee), 
which has been very destructive since 1917, is now definitely on the wane 
in some localities. The number of trees killed in 1933 was from 50 to 90 
7 H. Fox, Bureau of Entomology, U. S. D. A. 
8 I. M. Hawley, Bureau of Entomology, U. S. D. A. 
