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The wheat stem maggot is not so abundant in Manitoba as in past 
years, but in northeastern and eastern districts of Saskatchewan it is 
causing some damage to wheat by producing white sterile heads. 
The wheat midge has caused considerable loss in spring wheat in 
the Victoria district, Vancouver Island. It is also present in serious 
numbers at Lumby and Salmon Arm, in the interior of British Columbia. 
Reports indicate that the Colorado potato beetle is unusually abundant 
in Ontario and the Prairie Provinces. In Saskatchewan infestations were 
found to occur almost as far north as the limits of settlement. 
Following the occurrence of large and extensive flights of the beet 
webworm in the Prairie Provincos this spring, weeds, sugar beets and garden 
plants in many districts suffered injury from the larvae. 
An increase in the European corn borer infestation in southern 
Ontario has occurred, but probably there will be little commercial loss to 
the corn crop. 
The gladiolus thrips is now well established on southern Vancouver 
Island, in British Columbia. 
The European earwig is more numerous than ever in coastal sections 
of British Columbia and is causing many complaints. 
The pea moth is prevalent in pea-growing sections of the Gaspe Penin- 
sula, Quebec. 
Heavy infestations of the red turnip beetle, with consequent losses 
to garden plants, are reported in parts of Saskatchewan and Alberta. 
The roundheaded apple tree borer is more numerous than in previous 
years in orchard sections of southern Quebec. The apple curculio and the 
plum curculio are very injurious to the apple crop in this region, as the 
crop is very light, following destructive spring frosts. 
The rosy apple aphid was the outstanding insect pest early this 
summer in orchards of the Annapolis Valley, Nova Scotia. It was also more 
abundant and destructive than for many seasons in the Niagara district, 
Ontario. In the latter area, what threatened to be an unusually severe 
outbreak of the apple aphid was brought under control by extremely hot .and 
dry weather. 
The oriental fruit moth infestation in southern Ontario continues at 
a very low level and the insect is of much less importance than during any 
season since it became generally distributed over the peach-growing districts 
of the province. The peach borer is unusually injurious in the Niagara 
district. 
There has been a pronounced reduction in the population of grape leaf- 
hoppers in the Niagara district, and it is believed that the outbreak, which 
LIBRARY 
STATE PLANT BOARD 
