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THREE PESTS THREATENING QUEBEC. 



THE BROWN-TAIL MOTH, THE WART DISEASE OF POTATO, 

 AND THE WHITE-PINE BLISTER-RUST. 



W. Lochhead, Macdonald College. 



One insect and two fungous pests of great importance threaten Quebec. The 

 Brown Tail Moth has not yet been reported from this Province, but it is steadily 

 making its way north from New England. The Wart Disease of the Potato 

 has been seen in Newfoundland by Mr. Giissow, Dominion Botanist, |and the 

 White-Pine Blister-Rust of Europe, already introduced iiito the United States, 

 threatens the existence of the White-Pine plantations of this country. 



The stages of the Brown Tail Moth. a. moth : 6. female depositing egg mass ; c. cocoon; 

 d. caterpillar: c. winter nest . (After Britton). 



BROWN-TAIL MOTH, Euproctis chrysorrhoea.-In the Society's First Annual 



Report (1908-1909) the writer called attention to this insect as threatening On- 

 tario and Quebec, and emphasized the need for careful watch of the [over-wintering 

 caterpillar nests on the tips of twigs of forest, shade and orchard trees. Since 

 the publication of the above Report the Brown-tail Moth has continued Jto spread 



P.P. Eng.-3 



