5 GEORGE V. SESSIONAL PAPER No. 15 A. 191E 



REPORT OF THE DIVISION OF ENTCMOLOGY. 



BY C. GORDON HEWITT, D.Sc, DOMINION ENTOMOLOGIST. 



Ottawa, March 31, 1914. 

 J. H. Grisdale^ Esq., B.Agr., 



Director, Dominion Experimental Farms, ' 



Department of Agriculture, Ottawa. 



SiR^ — I have the honour to submit herewith my fifth annual report of the work 

 of the Division of Entomology covering the work beginning April 1, 1913, and ending 

 March 31, 1914. In addition to a brief account of the progress and results of the 

 investigations which have engaged the attention of the staff of the Division, both at 

 headquarters and in the field, reference is also made, for the purposes of record and 

 for the use of other workers, to the depredations of those insects which were unusu- 

 ally abundant and injurious during the year 1913. 



The greater part of the investigation work is now carried out at the various 

 field o.r regional laboratories located in different regions of Canada. Naturally, 

 they are situated in the districts where the insects under investigation occur most 

 abundantly. During the year, laboratories were established in three new regions, 

 namely: Strathroy, Ont. : Treesbank, Man.; and Lethbridge, Alta. The following- 

 is a list of the field laboratories now established, together with the investigations 

 which are being carried out at each station: — 



BRIDGETOWN", N.S.— Mr. G. E. Sanders in charge. Investigations 

 on the bionomics of the Brown-tail Moth and its control; introduction of 

 parasites of the Brown-tail and Gipsy Moths; the Bud Moths and Green Fruit 

 Worms of the apple. 



FREDEEICTON, N.B.— Mr. J. D. Tothill in charge. Control work and 



investigations on the Brown-tail Moth and the introduction and establishment 



of its parasites and predaceous beetles; investigation of the natural control by 



parasitic and predaceous insects of the Tent Caterpillar, the Fall Web-worm 



and Spruce Budworm. 



COVEY HILL, QUE.— Mr. C. E. Fetch in charge. Apple insects, especi- 

 ally the Apple Curculio (AntJwnomus quadrigibhus) ; Grasshopper control by 

 bacterial disease (Coccohacillus- acrid ioruni d'llerelle). 



JORDAN HARBOUR, ONT.— W. A. Ross in charge. Apple Maggot 

 {Rliagole{v> pomcnfJla) ; Apple and other aphids; control of greenhouse pests; 

 control of mill-infesting insects. 



STRATHROY, ONT.— Mr. H. F. Hudson in charge. Investigation of 

 White Grubs (Lachnosterna spp.) ; Wireworms and insects affecting field crops. 



TREESBANK, MAN.— Mr. N. Griddle in charge. Investigation of White 

 Grubs (Lachnosterna spp.); and chief insects affecting cereals; Hessian Fly, 

 Wheat Stem Maggots (Oscinis spp.), Wheat Stem Sawfly (Cephvs occidentalis) 

 and Grasshoppers. 



8.53 Ottawa. 



