26 THE REPORT OF THE Xo. 36 



cages at the Vinelancl Station Entomological Laboratory, adult midges emerged 

 from June 18th to July 4th, most of them coming out about June 23rd and 24:th. 



While looking into the wheat midge situation, a slight amount of Hessian 

 Fly (Mayetiola destructor) injury was noticed near Ridgeway, Welland County, 

 and in two wheat fields near Beamsville, the Wheat Joint Worm {Isosoma tritici) 

 in considerable numbers was found at work. 



WiREWORMS. According to Mr. H. F. Hudson, the oat crop in Caradoc, 

 Middlesex, was seriously injured by the wireworm, Agriotes mancus. 



Miscellaneous Pests. 



Warble Fly (Hijpodei-ma hovis). Numerous complaints of cattle gadding 

 were received. Farmers who had not previously seen their cattle stampeded in 

 this way and who learned that a fly was the cause, became much alarmed lest 

 the pest should increase. 



It looks as if Hypoderma hovis were becoming more abundant and more 

 widely distributed through the Province. In some districts, however, it does 

 not seem to be present yet, for stock men in these claim they never saw their 

 cattle gadding. 



Rose Midge (Dasyneura rhodophaga). This undesirable alien, already well 

 established in a large rose garden near London and in Toronto greenhouses, has 

 invaded another part of Ontario, viz.. Port Dover, where it was found this year at 

 work in Messrs. Ivey & Sons' greenhouses. 



In order to prevent the further spread of the midge, the following recom- 

 mendations have been made to florists : — 



(1) Whenever possible, growers should propagate their own roses. 



(2) New stock should be obtained from non-infested greenhouses. 



(3) Rose plants and scions purchased through commission houses or from 

 places not known to be free of midge, should be imported before the end of February. 

 This recommendation is made because such stock, provided it has been planted 

 in November or December, will not have been exposed to infection. 



(4) Greenhouse roses brought in later than the end of February should be 

 carefully examined for rose midge injury, and any infested plants should be 

 destroyed. In addition to this, the soil should be washed off the roots of the plants 

 and should then be thrown into the furnace or scalded with hot water or steam. 



Rose Leaf-roller (Cacoecia rosaceana). During March this insect was 

 remarkably abundant on roses in a Toronto greenhouse. 



Nematodes. Cyclamen were seriously injured by Nematodes in a Hamilton 

 greenhouse. The species concerned was not determined. 



Chermes. The galls made by C. ahietis and C. similis were more conspicuous 

 on spruce trees this season than they have been for several years. 



Ladybird Beetles. Coccinella 9-notata and Adalia hipunctata were remark- 

 Ably common this year. The latter species was very frequently found in large num- 

 bers this fall in dwelling houses in the Niagara district. 



Powder Post Beetles {Lyctus strmtus). This beetle was found infesting 

 and seriously injuring oak floors, base-boards, and an oak cupboard in a Vineland 

 house. Some of the wood in the cupboard was badly worm-eaten. A species of 

 Lyctus was also found injuring woodwork in a church in Hamilton. 



Prof. Parrott: I should like to hear from Mr. Ross regarding the dis- 

 tribution of the pear thrips. We find it both on pears and apples in Western 

 New York. So far, it has only been injurious with us in the Hudson River 



