55 EXPERIMEyTAL FARMS 



4 GEORGE V., A. 1914 

 THE DIVISION OF ENTOMOLOGY. 



THE ADMINISTRATION OF THE DESTRUCTIVE INSECT AND PEST ACT. 



This includes the inspection and fumigation of imported nursery stock and the 

 field and laboratory work against the Brown-tail Moth. The new arrangement whereby 

 this Department and the Department of Agriculture of British Columbia co-operate 

 in the work of inspection and fumigation of imported nursery stock at Vancouver, 

 B.C., has worked most satisfactorily. As indicating the importance of our inspection 

 of imported plants may be mentioned the discovery by an inspector at Vancouver 

 during the inspection last spring of eight egg-masses of the Gipsy Moth in an ever- 

 green (Thuja) from Japan. From these egg-masses several hundred larvae of the 

 Gipsy Moth emerged. During the importation season of 1911-12, over 3,800,000 trees 

 and plants were inspected. Owing to the danger of the importation of the Mediter- 

 ranean Fruit Fly (Ceratitis capitata) from the Hawaiian Islands, the importation 

 of all non-canned fruit from those islands was prohibited by the passing, in April, 

 1912, of Regulation No. 16 under the Act. In December, 1912, Regulation No. 17 

 was passed requiring a certificate of inspection to accompany all forest plant products 

 originating in those of the New England States which are infested with the Gipsy 

 Moth and imported into Canada. The importation of coniferous trees and Christmas 

 greenery from the same states was also prohibited by the same regulation. 



As recorded in the last annual report of this Division, the area infested with the 

 Brown-tail Moth in New Brunswick was found to have increased very considerably. 

 In 1911, as a result of our discovery that the Brown-tail Moth had spread from the state 

 of Maine into New Brunswick, a thorough scout was made and in the spring of that 

 year the infested area was found to be approximately 400 square miles. During the 

 summer of 1911, the Brown-tail Moths apparently invaded the province to so great an 

 extent that during the winter inspection of 1911-12 it was found that the infested area 

 consisted of about 6,400 square miles. The light character of the latter infestation 

 may be gathered from the fact that only 2,452 winter webs were collected. In Nova 

 Scotia, the infestation was found during the inspection season 1911-12 to have spread 

 a few miles farther eastward and a larger number of winter webs were collected; 

 7,503 webs were gathered, compared with 4,490 during the previous season. 



FIELD LABORATORIES. 



In 1911, by the courtesy of the Department of Agriculture of Ontario, a field 

 laboratory was provided at Jordan Harbour, Ont. During the past season the field 

 work of the Division was extended by the provision of small portable buildings in 

 Nova Scotia, New Brunswick and Quebec and by the provision of temporary quarters 

 in western Ontario and British Columbia. The following is a brief resume of the 

 field work which was started in connection with these laboratories. In Nova Scotia, 

 Mr. G. E. Sanders commenced an important series of investigations on the life-history 

 and control of the Bud Moth. An orchard of ten acres was placed at the disposal of 

 the Division, for spraying experiments, by Mr. Ralph Eaton, of Kentville, N.S. Con- 

 current studies were commenced on the Green Fruit Worm (Xylina spp) now becom- 

 ing a serious pest in some orchards. Results have already been obtained which would 

 indicate that it will bt possible to recommend a system of spraying which will control 

 these insects and at th? same time render unnecessary some of the applications. now 

 employed. 



The work carried on by Mr. J. D. Tothill at the New Brunswick field laboratory 

 located at Fredericton, N.B., consisted chiefly in the importation and colonization of 

 two of the most important enemies of the Brown-tail and Gipsy Moths, namely, the 

 predaceous beetle Calosoma sycophanta and the tachinid fly parasite Compsilura con- 

 cinnata. Supplies of these were collected, thanks to the courtesy of Dr. Howard, 



