1914 ENTOMOLOGICAL SOCIETY. 53 



enormous numbers on a field of asparagus examined during the cutting season 

 near Niagara Falls. Sometimes a single shoot would have 40 or more adults on 

 it and numerous eggs. They are not uniformly abundant in the province each 

 season as they vary greatly in numbers from year to year. 



Grasshoppers. In spite of the moist weather of 1912 grasshoppers have been 

 very numerous and destructive in Norfolk County this year. The complaint is 

 made that none of the remedies recommended are giving satisfaction. Serious 

 losses for several years in that county have led to requests for a thorough study of 

 the pest. 



Hessian Fly {Mayetiola destructor). I hoped that the wet weather in 1913 

 and the late sowing of the wheat would have done much to check the Hessian Fly. 

 These probably did help some but the insect has caused a considerable amount of 

 loss this year again. 



Forest and Shade Trees. 



Spruce Gall-Lice {Chertues similis and C. abietis). In most districts 

 visited this year there was good evidence to show that some cause was operating to 

 control these Iwo pests. In most cases there had been very few new galls formed 

 this year. 



The European Fruit Lecanium (Lecanium corni). This scale is remark- 

 ably abundant at present on Elm trees in the Niagara district. It has also on- 

 several occasions been sent in on Blackberry canes, these being almost covered. 

 Fruit trees in a few localities are moderately infested. 



About six years ago this same scale was very prevalent but from some cause, 

 probably parasites, it almost disappeared. I observed that a considerable per- 

 centage of the scale this summer showed the emergence holes of parasites so that 

 we are hopeful it will not prove very destructive. 



The Terrapin Scale {Eulecanium nigrofasciatuni). This once much 

 dreaded pest is still to be seen quite abundant on Soft Maples at St. Catharines 

 and some other places. No trees, however appear to have been specially weakened. 

 The scale is heavily parasitized. I have not yet seen it on any fruit tree, 



English Walnut Scale (Aspidiotus juglans-regiae) , Many people seeing 

 this circular scale on shade trees and mistaking it for San Jose Scale have been 

 alarmed lest the cities may be denuded of their deciduous trees. This fear is of 

 course not justified as the scale is not nearly so prolific as the San Jose and is also 

 quite heavily parasitized, it being a common thing to find 50 per cent, of the 

 insects with parasite emergence holes in them. The Soft Maples are much infested 

 with the English Walnut Scale in St. Catharines and to a lesser extent in many 

 other places. We have also found some species of poplar severely attacked. 



An interesting scale insect was found in 1907 by Prof. Jarvis on willows at 

 Collingwood and again by me this year on the same kind of plants at St. 

 Catharines. The Washington experts believe this to be a cross between Aspidiotus 

 juglans-regiae and A. ostreaeformis. 



