187 



Boss (W. A.). The Identity of the Wheat Midge in Ontario. — Canadian 

 Entomologist, London, Ont., li, no. 1, January 1919, p. 16. 



In connection with the reappearance in Ontario of the wheat 

 midge or " red weevil" in fairly large numbers in 1917 and in lesser 

 numbers in 1918, it is recorded that the species in question is 

 Thecodiplosis mosellana, Gehin, and not, as had been thought, 

 Contarinia (Diplosis) tritici, Kirby. 



Treherne (R. C). The History of the Codling Moth in British 

 Columbia. — Agric. Gaz. Canada, Ottawa, vi, no. 1, January 1919, 

 pp. 19-24, 1 fig. 



Since 1905, at least 12, and probably 13 distinct outbreaks of the 

 codling moth [Cydia pomonella] have occurred in the province of 

 British Columbia, at widely separated points. A marked increase 

 in the numbers of outbreaks occurred after the year 1912, coincident 

 with a noted rise in the fruit-yielding capacity of British Columbia 

 orchards. Altogether, since 1908 at least 40,000 larvae have been 

 collected and destroyed by hand labour, and at least 50,000 apple 

 trees have been under careful surveillance and inspection during this 

 period. 



The following operations are undertaken wherever an outbreak is 

 reported : — ^All trees are banded ; periodical inspections are made of 

 the bands and main tree trunks, (1) in May for overwintering larvae, 

 (2) in early July for the first generation of full-grown larvae, (3) in 

 in late July, (4) in mid-August (optional, according to seasonal 

 development), (5) in September for second generation larvae, (6) in 

 October ; windfalls from July onwards are disposed of by boiling and 

 burying ; two or three spray applications beginning with the calyx 

 spray are given ; all root-sucker growth, loose bark and dead wood are 

 removed from the trees. 



The following procedure is adopted for the disposal of the fruit in 

 an infested area : — An order for the formation of a codling moth 

 quarantine area is passed under the authority of the Agricultural 

 Association Act ; all tree fruit is inspected before shipment ; inspectors 

 are notified when shipments are intended ; all fruit is packed in a 

 packing house in the infested area, no fruit being allowed to be 

 handled in a house through which fruit from a non-infested area is 

 passed ; all orchard boxes used in quarantined areas must remain in 

 such areas unless passed by an inspector ; all fruit in infested areas 

 is loaded into railway cars by the most direct route and no such fruit 

 is allowed to be sold in the Province or for export from Canada ; loose 

 or unpacked fruit must not be moved from a quarantined area 

 without permission from an inspector, and no fruit may be stored 

 in cellars or houses without proper inspection ; cull fruits must be at 

 once made into cider or apple sauce or be destroyed ; railway com- 

 panies are requested to dispose of the sweepings from fruit cars by 

 burning ; refrigerator cars are inspected at as few points as possible, 

 and infested cars are kept closed, iced as soon as possible, loaded 

 locally, or are rejected. 



(C560) Al 



