1915 ENTOMOLOGICAL SOCIETY. 35 



Locust Borer (Cyllene robinice). Because of the work of this notorious 

 borer it seems to be impossible to grow black locust trees successfully in our 

 neighbourhood. On the Experimental Farm lawn one tree was killed and another 

 was rendered worthless by this insect. Adult beetles were very plentiful during 

 August. 



Eed Spiders (Tetranychus hicolor) were abundant on oak and chestnut trees 

 this past summer. 



The Basswood Leaf-roller (Pantograpka limata) was very common in 

 the Experimental Farm wood lot. 



Rhopalosiphum ligustri. Private hedges in different sections of the Niagara 

 District were severely injured by an aphid which I have every reason to believe 

 is the European species, R. ligustri. 



The Plant Louse {Phyllaphis fagi) was present in injurious numbers on 

 copper beech trees. 



The worst foe of our spruce trees and hedges, Chermes ahietis, I am pleased 

 to say, was exceedingly scarce last summer. 



Miscellaneous Insects. 



Myzii^ persiccE. was by far the most destructive aphid in the Experimental 

 Farm greenhouses this year. It was especially troublesome on radishes. 



The Variegated Cutworm (Peridroma saucia) made itself notorious in a 

 Niagara Falls greenhouse this month by attacking the heads of chrysanthemums 

 and razing off the florots. 



Dahlias grown in the Eittenhouse school gardens were a complete failure 

 this year, because of the depredations of the Tarnished Plant Bug {Lygus 

 pratensis). 



This 3^ear superheating proved to be a highly satisfactory method of ridding 

 houses of bedbugs (Cimex lectularius)^ 



A considerable amount of wheat was ruined in a granary near Ball's Falls 

 by the Granary Weevil {Calandra granaria). 



The President: I think Mr. Boss' report shows how very diligently he has 

 worked at the Dominion Entomological Laboratory at Vineland. It refers to a 

 number of subjects upon which probably some of the members here would like to 

 ask questions. 



Prof. Caesar : In regard to the apple maggot, 1 had not intended making any 

 comments until next year. The entomologists of the Provincial and Dominion 

 Departments of Agriculture are working together on this pest. We have 

 refrained from publishing up to the present, because we want to be abso- 

 lutely sure of our results before we put them into print. I have selected 

 one of the worst orchards I have seen for next year's test of the sweetened 

 poison mixture. This year Mr. Ross and I co-operated in spraying 22 

 acres of apple orchard which was last year very bad with the Apple Maggot, or 

 Eailway Worm as it is commonly called. We feel sure that there were plenty of 

 adults there this year. For instance, I took 400 live pupae in two hours at the one 

 place just by hand. The apples had been left piled up under the trees from last 

 year as they could not be sold because of the insect. I simply removed the apples, 

 took the pupfe out of the soil, put them into some earth and sent them to Mr. Eoss, 

 who used them in connection with caged trees. We sprayed this orchard twice, 

 paying special attention that the spray should get on the underside of the leaves. 



y E.s. 



