-39^- 
NOTICE TO COLUBOBATORS 
Honert Glen, of the Canadian EntonolO;3ical Branch, is spending 
sevor-'.l nonths at the IJational Musemi, enga/red in a study of elatcrid 
larvae, particulfirly those oelnn.-rin/r to the g-enus Ludi-gs and allied groups. 
Kg would he pleased to received on loan, for use in this study, any naterial 
rhich has hocn definitely associated with adults cf these groups. 
THE MOrCE IIvfPORTANT I!EilTU?:ES IN C^dlACA 
IN S^TEIBER AI-iD OCTOBER I936 
■>7ith the advent of aut'unn, the adult f^rasshopper populations in the 
V/estern Provinces declined rapidly and the out')reak terninated for this 
seo.son. Eg-^ surveys cf the infested regions have proceeded, and indicatjor.s 
point to continued severe outhreai:s in jaany areas in 1937* In southwestern 
Manitoha, v.-here, this year, the infestation of the lesser nigratory grass- 
hopper was norc severe thaii v/as e:cpected and v/here consideralole danage was 
done, the 1937 eutl^rerk threatens to ce noro severe than any during the last 
5 years. A fev^ snail, lighter outoroaks will likely occur in central and 
eastern Manitoba. In Saskatchev/a:i grasshoppers natcrially reduced the 
yields of feed grains and fodder throughout the infested region, and 0, very 
reneral and often considerahle incroo.se in the nxinhers of adult insects Y/as 
noted as conpared v,'ith the aut^jnn of 1935* Eurthcracre, a marked spread into 
nev/ localities v.'as found to have occurred, rith an increase of intensity in 
the drought-affected northwest. The outlook for 1937 1 i^i Saskatchewan, is 
considered rather unfavorahle, as the outhreak will proha'bly he considera'oly 
nore severe generally in the prairie nreas, and vdll extend farther into 
the n-^rthwest section. It appears that the roadside grasshopper will pre- 
doainate in nearly all the nore inp-ortant outbreaks in this province in 1937- 
In Alberts, grasshoppers caused danage to late grains and forage crops. Dry 
weather during the year v7as fa^'orahlo to increase in nany sections, and 
threatening ouforoaks of the roadside and lesser migratory species are anti- 
cipated in 1937 in nimher of areas, together with a northward extension of 
the affected region. In the Dry Belt area of British ColunDia, v/here grass- 
hoppers increased enormously during I936, the otifbreak prospects for 1937 
indicate the need of a widespread control campaign to avert heavy losses. 
An increased outbreak of the pale western cutworm is expected in 1937 
in Saskatchn\van and Alberta, where this spjccies cnused extensive losses to 
crops during the past season. The moth flight was about over by n id- Sep tomb- 
"'ireworns caused serious and widespread damage to the potato crop over 
a wide area in Saskatchewan. Onions and gladirli also suffered attack. It 
is evident that conditions, at least in central and western parts of the 
Province, have been C( nducive to severe attack on various vegetable and 
flov.'er go.rdon plants by these insects. 
Throughout much of the prairie area of Saskatchewan losses to v/heat from 
attacks of the wheat stem so.wfly were severe in fields where harvesting was 
delayed. Heavy losses occurred locally in Al'-erta. 
