os 4 - 
JAPANESE BEETLE INVESTIGATIONS 
L. B. Smith, Entomologist, in Charge 
J. L. King returned to Ohio State Universi ty in seotetben to under take 
graduate studies, and is expected to return to Riverton January 1, 19a 
BE. A. Richmond is spending” some time at the Massachusetts Agricultural 
College, where he is continuing graduate work and deing some special work on 
agents attractive and repsilent tc the Japanese teetle. Mr. Richmond expects 
to return to Riverton January 1, 1926 prs 
He ; \ 
L. B. Smith recently addressed the Plant Quarantine Conference of the 
northeastern and central Atlantic States on the suvject of the Japanese-beetle 
situation, With particular rererence to the quarentine work. 
Dr. George W. Martin, Chief of the Biology Department of Washington 
and Jefferson University, returned to that institution September 17. During 
the summer Dr. Martin cerried on a detailed study ot the relationship of the 
- Japanese beetle to. the. wransmiss ion of Bonet of stone fruits. 
Dr. C. L. Johns, chief of es research divis ion, together with repre- 
sentatives of the Standard Oil Company, recently visited the laboratory at 
Riverton to confer with members of the staif relative to insecticide investi- 
gations under way. 
C. P. Clausen writes from Shillong, India, that the outlook is most 
promising for the finding of perasites of Fopillia in that region. . He states 
that he has already found a species of Tiphia occurring in August on second- . 
stage larvae, which, if it could be introduced into the United States, would 
probably be an exceedingly effective parasite. Up to the present time impor- 
tations have been made from Japan of species of Tiphia occurring in the spring 
and in thé autum, but until the present report from: India wes received no - 
findings have been made of a species occurring ix midseason. 
On account of the congesti on at the laboratory additional space has 
recently been rented, which will serve as a headquarters for certain phases 
of quarantine and research work. ; 
The extermination and control work which has been carried on at Milton, 
Pa., in an effort to stamp out an infestation of sept beetles found there 
in 1924, was recently ended for the season. Wo beetle ave been found at 
that point this year. This infestation seems to have ane completely eradi- 
cated, but work will be continued at this point for POO Uae year or two, to 
make certain that no beetles have escaped. 
The spread of tne Japanese beetle during the summer of. 1925 has been 
the smallest in propor ti on of any year on record. . In Pennsylvania only one 
beetle was found in the open beyond the present cuarantine limits. 
