oo he 
JAPANESE BEETLE INVESTIGATIONS 
Loren B. Smith, Entomologist, in Charge 
M. Le. Dean, Director of the Idaho State Bureau of Plant Industry, Dre 
Stepan Soudek, of the College of Agriculture and Forestry, Brno, Czecho= 
slovakia, and Professor R. W. Harned, State Entomologist of Mississippi, were 
recent visitors at the Japanese Beetle Laboratory. 



After a summer meeting and field trip of the Northeastern Entomologists — 
held in and near New York on July 21 and 22, a number of the members spent 
July 23 at the Japanese Beetle Laboratory. A field trip was arranged for the 
visiting scientists, who were shown the grub-control project at the Riverton 
golf course, spraying for beetle control at several orchards, and an exhibition 
of an attrahent-contact spray. Among those present were J. Ns. Knull, He Be 
Kirk, and F. M. Trimble, Harrisburg, Pas: Dr. Hugh Glasgow and Rodney Cecil, 
Geneva, N. Ys; Dr. R. De Glasgow, University of Illinois; H. L. Dozier, Newark, 
Del,; Dr. Alva Peterson, Riverton, N. Jw; S. Me Dohanian and T, H. Jones, Melrog 
Highlands, Masse; P. Te. Barnes and J. G. Sanders, Philadelphia; Albert Hartzell, 
Yonkers, Ne Ye; J. Re Springer, Florida; J. R. Stear, Chambersburg, Pas 
A special field day was held at the Japanese Beetle Laboratory on 
July 28 for prominent officials from New Jersey, Pennsylvania, Delaware, and 
Washington, D. ©. Under the direction of Loren B. Smith an elaborate program 
was prepared, and the visitors were given an SPOS Vere to become acquainted 
with the work in progress and to observe yractical examples of control in the 
field, They were shown the laboratory where chemicals in spray form are 
tested for use in the warfare against the beetle. Methods of collecting and 
of shipping parasites from foreign countries, and of rearing them for use 
against the beetle, were explained. Traps, bait-cans, and other apparatus, 
for field and laboratory, were shown, At the Riverton Golf Course methods of 
treating golf greens were discussed, At the Japanese Beetle Laboratory in- 
formal talks were given by guests and members of the staff, after which lunch 
was served at a neighboring hotel, In the afternoon a field trip was made 
by auto to several apple and peach orchards, and the guests were shown the 
injury ceused by beet Les on unsprayed trees and the protection afforded by 
proper spraying. A feature of the trip was a demonstration of the use of 
geraniol, a cope of which at once attracted thousands of beetles to the vi- 
cinity. A tr covered with them was then sprayed with a suitable contact 
spray; dead Sectusets soon covered the ground under the tree. 

° 
On the afterncon of July 23 the activity of Japanese beetles along 
the river front in Philadelphia indicated that a migrational flight was ime 
minent. An embargo covering the movement of all fruit and vegetables from 
Philadelphia to points outside the regulated area was accordingly placed, to 
become effective at midnight of that date. A migration of beetles from New 
Jersey to the market districts of Philadelphia continued until July 28, in 
what is believed to have been the heaviest flight of its kind that has taken 
place since Philadelphia came within the infested area. A contimuous rain — 
checked the activity of the beetles, and the embargo was lifted on July 29. 
