REPORT OF THE SOCIETY 75 



serious damage at Franklin Centre, Stockwell, and Mt. Johnson. The 

 injury caused by this insect is as the name impHes in the elm leaf. Mines some- 

 what similar to beet leaf miner work are made, and in badly infested trees 

 practically every leaf will have a blotched appearance. 



The maple borer. (Plagionotus speciosus Say.) 



For a number of years this insect has been doing damage to the sugar maple 

 in this and surrounding disticts. Many trees in the maple woods are dead or 

 dying directly or indirectly from the injuries of this insect. 



Caterpillars feeding on leaves of oak. 



During the month of August there was an infestation of caterpillars feeding 

 on the leaves of ask, Quercus alba Linn. Defoliation was quite severe, for the 

 bare appearance could be noticed a considerable distance from the tree. The 

 caterpillar was a species of Anisota, probably senatoria. 



Maple leaf cutter. (Paraclemensia acerifoliella Fitch) 



In the sugar maple bushes in the Hemmingford and Covey Hill districts a 

 severe infestation of the above insect occurred this year. In one bush prac- 

 tically every leaf on every tree was marked with one or more of the peculiar 

 ring-like patches. These patches were the work of the larvae of Paraclemensia 

 acerifoliella. 



Slugs 



Gardens in Montreal West were very materially injured by slugs which were 

 present in very large numbers. 



Potato Flea beetle (Epitrix cucumeris Harr.) 



This insect was quite numerous on potatoes and tomatoes in several dis- 

 tricts. This and allied flea-beetles are not taken seriously enough by the 

 growers, because they really do very considerable injury to the young plants. 



Imported cabbage worm. (Pieris rapae Linn.) 



Present in medium numbers wherever cabbages were grown south of the 

 St. Lawrence River. 



Peacock fly or Sunflower maggot. (Straussia longipennis Wied.) 



One large field of sunflowers near Lennoxville had 99% of the sunflowers 

 infested with the larvae of this fly by July 31 and reports of serious injury were 

 received from Richmond, Milby, Huntingville and Cookshirc. The value of 

 the crop is very considerably reduced by its attacks and the growing of this crop 

 is being discontinued by many farmers owing to the attacks of this insect. 



