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In Prince Edward and Northumberland Counties, to the north of Lake Ontario, 
a severe outbreak of the tobacco worn developed on tomatoes. In some fields the 
plants were stripped and the fruit attacked. 
The potato or tomato psyllid ( Parent rioza cockerelli Sulc.) greatly increased 
during the summer and now occurs over a large part of Saskatchewan and Alberta. 
A cockroach injuring roses in a Grimsby, Ontario, greenhouse ‘has 'been de- 
termined as Pycnoscelus surinamensis L. Those specimens appear to be the first 
found established in Canada. 
• The codling moth has been very destructive in many apple orchards in the 
warmer districts of Ontario, and has been more injurious than usual on pears. 
The European red mite has been more abundant on and injurious to plums and 
apples in southern Ontario than for several years. Mary apple orchards in the 
Okanagan Valley, British Columbia, suffered injury from this species. 
Weather conditions in the Niagara district, Ontario, this season were very 
favorable for the grape leafhopper and injury was severe in many' unsprayed and 
poorly sprayed vineyards. 
Twig infestation by second-brood oriental fruit moth larvae in the Niagara 
.Peninsula at the end of August was lower than last year, with an average infesta- 
tion of 2.5 jtercent, as compared with 3*5 percent in 1937 * In southwestern 
Ontario the infestation was still running high, averaging 17*1 percent, with in- 
dividual orchards as high as 55 percent. 
The tarnished plant bug has been the cause of serious" damage to peaches and 
pears in some orchards in the southern Okanagan, British Columbia, the fruit being 
badly scarred and misshapen. In one orchard 56 percent of the crop of 5’ acres of 
young peach trees was culled on account of this injury. 
The woolly apple aphid is again scarce in the Okanagan Valley, British 
Columbia, owing to natural enemies, including the introduced parasite Aphelinus 
mali Hald. .... 
The known distribution of the European spruce sawfly has been greatly ex- 
tended. It has been found in an elliptical area in southern Ontario, extending 
from Hamilton north to Muskoka and from Stratford east to Peterborough. Individual 
larvae have also been received from Gracefield in the Gatineau Valley, Quebec, and 
from Hawk Junction on the Algoma Central Railway. In general the infestation in 
the. southern part of the Gaspe area, Quebec, and in the northern part of New 
Brunswick was less this year, owing, apparently, to the abnormally high percentage 
remaining in diapause. In southern New Brunswick there was a general increase, A 
noticeable increase in the number of dead trees was recorded in the Gaspe. 
The dying of birch is becoming an important problem, particularly in southern 
New Brunswick. The dying trees generally have the appearance of having been 
attacked by the bronze birch borer, and all those examined showed evidence of the 
work of this insect. 
