~-7- 
Wireworm larvae feeding abnormally at this seasone--On his investiga- 
24 tion for the control of wireworms, Re Se Léhman, of the Walla Walla, Washe, 
_. laboratory, reports: "About 5,000 ground-wheat baits were placed in the soil 
during the month, The wireworms do not appear to have been feeding as they 
normally do at this time of the year, as less than one wireworm per bait was 
obtained from the 5,000 baits. Normally, one would expect to obtain at 
least an average of 5 wireworms per bait. If the number of wireworms per 
bait does not increase during the first part of June it will be necessary to 
resort to sifting the soil in order to obtain the necessary wireworms for the 
Winter experiments.” 
Beet leafhopper breeding high populations in Salt Lake City arcae-- Ee 
We Davis, of the Salt Lake City, Utah, laboratory, reports. as follows: "The 
nature of the weathér this spring has manifested itself in regard to the -ac- 
tivity of Eutettix tenellus Bak. in the local breeding areas. As a rule, the 
. first-brood matures the latter part of June, at about the same time the first 
-brood matures from the bugs that have migrated from the perennial breeding 
arease This year the brood from the local breedim area mtured during the 
first part of May, which coincided with the latter part of the migration from 
the perennial breeding Sets, | 
_It has been extremely difficult this year and most impossible to deter~ 
mine to just what extent the local breeding areas contributed tenellus to the 
adjacent beet fields. At present the populations are breeding up extremely 
high in these breeding areas." 
Good control of beet Pee eee by spray in Sacramento Valley.--We Ce 
Cook, of the Modesta, Calif., laboratory, states that "The strongest evidence 
of the effectiveness of control work in the natural breeding areas of bé¢et 
leafhoppers this year lies in the fact that high populations and quite general 
curly-top damage are being found in the Salinas Valley and in several southern 
California areas that are rarely damaged. There is a general . outbreak of 
curly~top over the entire western beet growing area and the Sacramento Valley 
is the only area of any size that is not suffering. It is impossible to 
state how much of this protectionis.due to control work, but certainly the 
control has contributed fo it in some degree," 
Survival of Mexican bean bestle low in Estancia arcae--Re Le Wallis, 
of the Estancia, N.Mex., laboratory, reports that the average percentage of 
beetles recorded alive in the hibermation cages is 4.56. This is very low 
as compared with the same month in previous yearse It is noted that on the 
average there is a larger percentage of beetles alive in the sections from 
the north-slope exposure than from the south-slope exposure. This is con» 
trary to records of previous years and may be explained by the fact that more 
moisture is retained in the hibermtion mterial on the north-slope exposure 
than in the material on the south-slope exposuré. 
Drought retards emergence of Mexican bean heetle.--Ne Fe. Howard, 
Columbus, Ohio, reports that owing to the severe drought, emergence of insects ° 
from hibernation has been greatly retarded. The survival of Epilachna cor- 
rupta Muls. in hibernation was high in April and is presumably still high, but 
