- A = 
callus, but the evidence is rather conclusive, as this characteristic i 
annual dying back of the callus occurs only in canker-infected orchards; 
(7) die-back of callus does not appear where the woolly aphid has been 
absent from natural causes or on account of effective treatment the pre— 
ceding season; (8) die-back of perennial canker callus does not seem to 
follow woolly aphid infestation without severe winter temperatures, 
neither does it appear to result from low temperatures alone without pre— 
vious aphid injury." 
JAPANESE BEETLE AND ASIATIC BEETLE RESEARCH 
Japanese beetle attracted to blueberry field from distance.—F.W. 
Metzger, Moorestown, N. J., reports as follows: "Interesting data have 
been obtained from the collections made from the traps placed at one— 
tenth mile intervals in the woods north of Tranquillity blueberry field. 
The trap located one-tenth mile from the field captured approximately 
one-half as many beetles as did the trap located 5 yards from the blue— 
berry plants. The trap two-tenths mile from the field captured approxi- 
mately one-fourth as many as the trap located one-tenth mile from the 
field, whereas the trap three-tenths mile from the blueberry plants cap— 
tured approximately the same number of beetles as the trap two—tenths mile 
distant. The traps four-tenths and five-tenths mile from the field cap— 
tured approximately the same number of beetles, but the number is approx—— 
imately double that taken in the trap located three-tenths mile from the 
field. These data are interpreted as follows: The blueberry plants and 
the traps surrounding the field attract beetles to the field from a dis— 
tance of approximately three-—tenths mile, as indicated by the larger 
number of beetles taken nearer the field. At a greater distance, how-— 
ever, the traps located near the field have little effect on the normal 
infestation in the woods. This is further borne out by the fact that 
beetles have been noted feeding in large numbers on alder at a distance 
of approximately four-tenths mile from Tranquillity field." 
TRUCK CROP AND GARDEN INSECTS 
Wireworm larvae endure starvation well.-—-R. S. Lehman, Walla Walla, 
Wash., reports on starvation experiments in which "100 larvae were each 
placed in separate salve tins containing pure sand (silicon dioxide) 
from Sept. ll, 1931, to July 28, 1933..* * * The results show thatuoum 
of the larvae survived for at least 1 year 9 1/2 months without food of 
any kind." 
Control of wireworms by submergence.--E. W. Jones, Walla Walla, 
States that "Flooding for 4 days in July with soil temperatures above 
75° F. will reduce wireworm populations 88 to 93 percent." The species 
Re A A ee 
Parasitization of European earwig in Northwest.—-S. E. Crumb, of 
the Puyallup, Wash., field laboratory, reports that "Parasitization of 
earwigs has continued steadily and about 5,000 have been infested by hand 

