552 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 16 
Scientific Notes 
Note on the Cotton Boll Weevil in Kansas. On Oct. 10th and 11th I found quite 
a number of adults and larvae in bolls on cotton in southern Kansas, Montgomery 
County. This county lies immediately north of Oklahoma, and according to the 
best information 1 can get there is considerable cotton growing immediately south 
of this county. 
Specimens of this insect have been submitted to Mr. J. L. Webb of the Bureau 
of Entomology, who states that they are typical cotton boll w T eevil. 
E. G. Kelly, 
Extension EiAomologist. 
A Mealy Bug on Grape. Grape growers in the vicinity of Lawton and Paw Paw, 
Michigan, during the summer of 1923, complained of injury to their grapes, caused 
by a mealy bug. The infected clusters were not only rendered unsightly by the 
presence of honey dew but the grapes showed a tendency to drop before they were 
ripe. This left the cluster ragged in appearance and exposed the white cottony 
egg masses along the stems. The mealy bug proved to be the omniverous species 
Pseudococcus maritimus Ehr., which is known to occur on a number of different 
hosts. 
Eugenia McDaniel, 
Research Assistant in Entomology 
The Effect of Low Temperatures on the San Jose Scale in Georgia. In taking 
records on the results of lubricating oil emulsions and other sprays for the control 
of the San Jose scale, Aspidiotus perniciosus Comstock, on peach trees in Georgia, 
notes were also made on the mortality of the insect from low temperatures. The 
table below gives in terms of percentages the dead scale insects found on the check 
or untreated trees of the experiment before and after the cold period. 
Date 
(1923) 
Treatment 
for scale 
Minimum 
temperature 
Percent 
scale dead 
Feb. 9 
No treatment 
36° F 
12% 
“ 16 
u u 
26° F 
27% 
“ 19 
i i i l 
21° F 
38% 
The above table shows that as a result of the low temperatures there was an in¬ 
creased scale mortality of 26 % on the trees that had received no treatment whatever 
during the winter for the control of the insect. The minimum temperatures recorded 
for a four day period were as follows: Feb. 16, 26° F; Feb. 17, 23° F; Feb. 18, 18° F; 
and Feb. 19,21° F. These temperatures were unusually low for Central Georgia, 
and some large female scales and all crawlers were killed during the period. 
On March 20th, 1923, a minimum temperature of 23° F was recorded in Central 
Georgia which killed about 20% of the peach blooms, but did not affect the scale 
mortality to any extent. The minimum on the day before this freeze was 51° F and 
on the day after 35° F. The low temperature during the second cold period of 1923 
in Georgia was perhaps of a too short duration to kill the San Jose scale. 
Oliver I. Snapp and C. H. Alden, U. S. Bureau of Entomology , 
Fort Valley, Georgia 
