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THE MORE I IMPORTANT ENTOMOLOGICAL FEATURES IN CANADA 
In areas in Saskatchewan where crop conditions have been poor, and 
control measures consequently generally neglected, grasshopper ravages 
were completing the work of the drought. Local dispersal of the insects 
resulted in severe defoliation of remaining crops throughout west- 
central and northwestern parts of the Province, with heavy reduction in 
feed supply for livestock. Infestations are spreading north and north- 
eastward into many new districts. In Alberta there was little loss from 
grasshoppers up to the end of June and the use of poisoned bait was 
proceeding with satisfactory results. However, with the advent of hot 
weather in July, the grasshoppers were migrating into grain fields, and 
some districts reported losses in spite of the stenuous poisoning 
campaign. Toward the middle of July hoppers were migrating into southern 
Alberta and losses were increasing in drier sections, particularly in the 
southeast. Severe damage was still occurring in southern sections, in 
the latter part of the month, insspite of recent rains. In Manitoba the 
distribution of poisoned bait was necessary only in the extreme south- 
west, and excellent kills were obtained. Late in July, grasshoppers in 
the Red River Valley were reported dying of fungous disease. By mid- 
July, a large proportion of the grasshoppers over extensive areas of the 
Prairie Provinces had reached the adult stage. 
In areas of Saskatchewan and Alberta affected by extreme drought, 
the destruction of host plants may result in a marked reduction of the 
wheat stem sawfly population, and reduce the economic importance of the 
insect in such areas for some time to come. In the Rockyford, Nobleford, 
and Barons districts of Alberta, wheat is severely infested. 
The armyworm is causing considerable loss of excellent stands of 
oats, other grains, and grasses in a wide area in eastern Saskatchewan 
and has defoliated some fields of oats and barley at scattered points in 
Manitoba. 
Severe outbreaks of the western chinch bug occurred in old brome- 
grass pastures in the Red River Valley, Manitoba and, where the insects 
attacked wheat in numbers, completely destroyed the crop. 
Weather conditions in southwestern Ontario were ideal for pupation 
and emergence of the European corn borer. The first moths and eggs were 
found at Chatham on June 28. 
