26 



THE REPORT OF THE 



No. 19 



information, about insect pests and methods of combatting tbem, and at 

 the present time more places are open for the employment of economic en- 

 tomologists in the south than any other section, so far as the writer is aware, 

 while it goes without saying that in regard to life histories, broods, hiberna- 

 tion, etc., much more remains to be discovered there than in the more north- 

 ern states. 



■"""^icii 



Fig. 11. Papilio thoas, the Giant Swallow-tail Butterfly. Colours black and yellow. 



In the discussion that followed the reading of this paper, the first insect 

 that was commented upon was Plum Curculio (Conotrachelus nenuphar). 



Dr. Fletcher spoke in high terms of appreciation of Prof. Sherman's 

 paper, and congratulated the Society upon the addition to its members of so 

 able and enthusiastic an entomologist. He remarked that the Plum Curculio 

 in Canada was kept in check almost entirely by spraying, and that jarring 

 was rarely resorted to. 



Mr. George E. Pisher had tried both methods, but preferred spraying, 

 as it proved more effective, and had the additional advantage that a fungicide 

 could be used with the Paris green, and thus a double result was accomp- 

 lished. Mr. Willard, of Geneva, N.T., whom he had visited, depended 

 entirely upon jarring for the protection of his plum trees. He uses the wheel- 

 barrow system, and employs twelve men, each with a barrow, for the pur- 

 pose. As the Curculios are very susceptible to cold, the jarring is done in 

 the early morning "when they are sluggish and have a less firm grasp on their 

 resting place. As many as a hundred of the beetles were often shaken from 

 one tree. There was undoubtedly one advantage in jarring, — you killed the 

 beetle for certain, whereas in spraying you only distributed poison for the 

 insect to eat and could not be sure that he would partake of it. 



Dr. Fletcher said that the cost of the labour required for jarring was 

 very much greater than for spraying. Good paying results were obtained by 

 the use of the latter method, and, as Mr. Fisher had stated, there was the 



