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JAPANESE BEETLE INVESTIGATIONS | A 
Loren B. Smith, Intomologist, in Charge 
The adult Japanese beetles have made their appearance at Riverton, 
N. J., but there will probably be no large infestations until after the 
first week in July. The first beetle of this season was recorded from 
Glassboro, N. J., on June 17. With the appearance of the beetle and the 
imposition of quarantine measures the laboratory force has been materially 
increased. 
Several college men are temporarily connected with the Beetle In- 
secticide Section of the Japanese Beetle Laboratory and are working under 
the direction of E. R. Van Leeuwen, Associate Entomologist. Included in 
this number are Prof. 0. G. Anderson, Purdue University; Howard Stackhouse, 
University of Arizona; Rankin Watson, Temple University; C. E. Jennings, 
Connecticut Agricultural College; H. H. DeCou, Rutgers University; M. M. 
Ott, Gettysburg College and University of Pittsburgh; G. A. Fails, Grove 
City College and University of Chicago; P. R. Dennis and I. L. Hunt, Jr., 
University of Pennsylvania; and 2. L. Tripp, Pennsylvania State College. 
K, B. Rogers and EH, W. Coward, of the University of Pennsylvania, 
have joined the Soil Insecticide Section of the Japanese Beetle Laboratory. 
Mr. Rogers has been doing graduate work at the University of Pennsylvania. 
| Dr. W. E, Fleming, of the Soil Insecticide Section, recently vis- 
ited Washington, where he conferred with members of the Bureau of Ento- 
mology and the Bureau of Chemistry on some of the problems of that section. 
The following temporary appointments have been made in the Ecology 
Section: H. S. Margerum, New Rochelle, N. Y.; Nathaniel Tischler, Yale 
University; Daniel Ludwig, and F. L. Else, University of Pennsylvania; R. N. 
Johnson, J. S, Holder, W. H. Minor, Jr., and W. B. Redmond, Emory University; 
H.F. Strohecker, Macon, Ga. 
On June <8 J. L. King started the parasite introduction for the control 
of Anomala orientalis at Westbury, Long Island. A number of female Tiphia 
vernalis were introduced at this time. H. C. Hallock, formerly of the Japanese 
Beetle Laboratory, will have charge of the rearing work on Long Island. | | 
The Laboratory at Riverton received on June 12 a large shipment of 
Tiphia vernalis from Korea. The parasites were shipped as adults in spe- 
cially prepared tins bearing supplies of water and food. The success of 
this shipment was very remarkable, as 80 per cent of it came through in q 
good condition after being 20 days en route. The wasps were used in part | 
for immediate colonization and in part for propagation, the latter result- 
ing in the production of about 15,000 eggs. The parasitized beetle larvae 
bearing these eggs were transferred from the laboratory to the field, where, 
under normal conditions, they are able to develop into adult wasps. 
