1913 ENTOMOLOGICAL SOCIETY. 33 



Shot-hole Boeer {Eccoptog aster rugulosus). This year again this borer 

 has caused the fruit growers a great deal of trouble. While the remedy is difficult, 

 the prevention is easy. There is no cause in any attack I have seen which could 

 not be assigned to a pile of lumber, or brush left in close proximity to the trees. 

 From mere general observation it would appear that attacks are more often exper- 

 ienced by fruit growers immediately bordering on the lake. The habit of throw- 

 ing orchard trimmings over the edge of the cliff into Lake Ontario is a bad one, 

 and no doubt accounts, to a certain degree, for the attack of this particular insect. 



Blister Mite (Eriophyes pyri). This insect has become localized in cer- 

 tain apple orchards south of Vineland and west of St. Catharines, but so far as 

 the Niagara District is concerned it has not become a general orchard pest. 



Woolly Aphis (Schizoneura lanigera). I have noted a probably slight in- 

 crease in the prevalence of this insect in a few orchards, but so far as the district 

 as a wliole • is concerned it still remains a general orchard insect of minor 

 importance. 



Green Fruit Worms {Xylina sp.) were commonly noted in the Eidgeway 

 and Fort Erie District, and did a considerable amount of damage to young matur- 

 ing apples. 



Spring Canker Worm {Paleacrita vernata). The work of this insect was 

 broug'ht to my notice on June 8th. It has become localized in several apple orchards 

 south of St. Catharines. 



Fig. 16. Peach Tree Borer — 1, female; 

 2, male, 



Peach Tree Borer (Sanninoidea exitiosa). This insect is again attracting 

 the attention of progressive fruit growers. At the request of several fruit growers 

 I have had occasion to visit orchards attacked by this insect. In one ordhard, in 

 particular, 80 per cent, of young four-year-old peaches were attacked. According 

 to the testimony of Mr. John Read, formerly orchard inspector of the Beamsville 

 District, ten years ago this borer had been considered a most serious pest. In fact, 

 it had been at one time a part of the general farm routine to make examination for, 

 and excavate, the larvas from the crown of the trees. In more recent years this 

 practice had ceased, owing to the increase in price of adult labour, and the ineffici- 

 ency of boy labour. It is hoped that a proper watclh will be maintained by the 

 fruit growers on this important insect. 



According to observations from material at hand this year, the first males 

 emerged on July 18th and the first females on July 14th. It is necessary, there- 

 fore, to adopt precautionary measures at this time against the oviposition of this 

 moth. 



Cherry Tree Slug {Eriocampoides limacina). In the early part of the 

 summer it was noticed that this insect was showing evidence of becoming particu- 

 larly serious this year. Its appearance was very much earlier than usual owing to 

 the extremely hot and dxy weather of the spring. Owing to this, the process of 

 spraying an arsenical was interfered with, because the fruit was ripe and ready to 

 pick at the same time as the slug had readied, or nearly reached its full state of 



