76 PROTECTION OF PLANTS — 1924-25 



Cigar case-bearer. (Haplotilia fletcherella Fernald.) 



This insect is very destructive to apple foliage in the region of LaSalle and 

 along Lake St. Louis. In the fall the twigs were almost covered in many in- 

 stances with the overwintering cases. 



Cranberry rootworm beetle. (Rhabdopterus picipes Oliv.) 



By July 12, an apple orchard at Rougemont, Que. was severely injured by 

 this insect. One half the crop on two thousand trees was severely eaten and the 

 leaves were also considerably eaten. This is the first record of this insect doing 

 serious injury in Canada. 



Round-headed apple-tree borer. (Saperda Candida Say.) 



Continues to be injurious to apple trees in many sections of the province. 

 Abbotsford, Rougemont, Hemmingford districts and Missisquoi county are the 

 places most seriously affected. 



Currant span worm. (Cymatophora ribearia Fitch.) 



A few cases of severe injury were noted at Ste. Anne's and Beauharnois on 

 both wild and cultivated varieties. 



Buffalo tree-hopper. (Ceresa bubalus Fabr.) 



Numerous scars were found on young trees in the Hemmingford district. 

 The importance of attacks from this insect has not been sufficiently emphasized 

 because when the scars are numerous the functions of the bark are interfered with 

 In consequence, the vitality of the tree is materially lessened and the tree be- 

 comes sickly and often dies. 



Apple Tent caterpillar (Malacosoma americana Fabr.) 



It was found mostly along roadsides, fences, etc. especially on wild cherry. 

 There was an increase of 100% in Central Quebec over 1923 but it was held in 

 check and developed very slowly up to June 20 owing to the cool, wet weather. 



Apple-tree bark-miner. (Gracillaria elotella Busck.) 



Serpentine mines in the epidermal bark of young apple trees was noted 

 in several orchards near Hemmingford. 



Gipsy moth. (Porthetria dispar L.) 



Several liundred egg masses were found by the Gipsy Moth Scouts in the 

 Belle Vallee about ten miles east of Hemmingford. This is the first time this 

 i nsect has been collected in anv numbers in Canada. 



