Bap 
JAPANESE BEETLE AND ASIATIC BEETLE RESEARCH 
I. M. Hawley, Moorestown, N. J., reports: "At Harrisburg, Pa., 
where geraniol traps to collect. Japanese beetles are operated in coopera- 
tion with the Pennsylvania State Department of Agriculture, Aserica 
castanea Arrow has been taken in large numbers. When the traps on two 
city blocks were cleaned out 140 Asericae were found." This is the first 
record of this insect being taken in large numbers in this way. 
In June an experiment under the direction of W. E. Fleming was 
started at Mount Holly, N. J., with 225 traps to test the relative effi- 
ciency of new and old bait in attracting the Japanese beetle, the effect 
of the color of the traps on their effectiveness, and other modifications 
of the standard trap. Mr. Fleming says: "In view of the comparatively 
light infestation of beetles at Mount Holly, over half of these traps 
were moved to Westbury N. J., where a greater number of beetles were 
available. This summer the green traps with white funnels and baffles are 
capturing more beetles than the standard all green traps, thus confirm— 
ing the results obtained last summer. A tran made entirely of glass has 
been found to be 20 per cent more effective than the standard green trap. 
Traps painted with aluminum paint and traps with modified aeration holes 
did not materially differ from the standard trap in the number of beetles 
captured. Several new types of traps are being tested, but no definite 
results have been obtained to date. The nickel traps appear to be the 
most effective of any in use and are capturing two to three times as many 
beetles as the standard green traps." 
Mr. Fleming also reports: "One hundred and twenty odoriferous 
materials have been tested in comparison with geraniol, but since none of 
these substances decreased the attraction of geraniol to the Japanese 
beetle even 50 per cent, these chemicals will not be considered further 
as repellents against the beetle. * * * A rotenone solution was tested 
at dilutions of 1 to 100 and 1 to 200, but was found to be only slightly 
repellent to the Japanese beetle." 
tn work with foreign parasites, L. B. Parker, Yokohama, Japan, 
found that an improved method of feeding Tiphia with honey-saturated 
cotton wads has given an increased egg production and longer life of 
adults in rearing work in Japan. In Homebush, N. S. W., R. W. Burrell 
records a possibility of seven to eight generations per year with the 
parasite Palpostoma and a 25 per Gent parasitism by this fly on Anoplog— 
natus olivieri. In the domestic work, J. L. King, Moorestown, N. J., 
says, "it has been found that soil types have little effect on the aver— 
age depth of cocoon formation in Tiphia vernalis. With Dexia ventralis, 
the original colony is found to be spread over a wider area than was 
suspected. Centeter cinerea has extended its range considerably this 
season and parasites are recorded as more abundant than last year; a 
parasitism of 23 per cent was recorded for June 22, but as beetles be— 
came more abundant this rapidly declined. 
