30 



Clisiocampa americana.^This insect enemy of orchards was found 

 abundantly and occupying a wide range in 1897 just one year after its 

 great invasion of the orchards of Western Quebec. In the winter of 1908, 

 we had to destroy many egg clusters on the branches of our apple trees. 

 A few caterpillars were seen scattered here and there below Quebec during 

 the summer of 1898 but since thence it has not been troublesome. 



Clisiocampa sylvatica. — We have now and then the occurrence of these 

 caterpillars in the woods particularly upon the chokecherry. But it never 

 remains for more than a single season at a time. It is evident that the few 

 we see every fifth or sixth year are wandering immigrants from the west 

 which are unaware of the severity of our climate. They seldom are seen 

 in orchards. 



Diabrotica vittata. — This insect, which has proved so destructive to 

 cucumbers in many districts, was recorded only twice in twenty years, in 

 Eastern Quebec, appearing on both occasions in July and disappearing at 

 the end of August. None have been seen for over ten years. 



Doryphora decemlineata. — This beetle made its first appearance below 

 Quebec in the year 1881. During the following year it was the cause of 

 great damage and loss owing to the farmers being slow in adopting ways 

 and means of combating it. Since the general use of Paris green against 

 it, one can everywhere see throughout the counties of Kamouraska and 

 Charlevoix and along the shores of the St. Lawrence where the water is 

 salted that the beetle has almost entirely disappeared. 



Many of the larva buried in the soil in the fall die there, and most of 

 the beetles we see in the spring arrive late, and evidently come from 

 localities situated further inland. In fact, we now use very little Paris 

 Green. During such years as the present none was used. 



Hemerocampa (Orgyia) leucostigma. — Each year Ave have found in our 

 orchards a few dozen Tussock Moths, but in 1906 they invaded this locality 

 in large numbers. Hosts of them attacked and damaged the trees of the 

 orchard by almost totally defoliating them and the gnawing also of the 

 fruit. In the late fall cocoons laden with eggs were to be found everywhere 

 in such numbers that to endeavour to destroy all was out of the question. 

 It was felt that the following spring must bring an even greater army of 

 these caterpillars. To our astonishment, only a few dozen were seen during 

 the summer of 1907, although in the spring of the year many half grown 

 larva were seen. Some were half dead and others completely so. Since 

 then none have appeard worth speaking of. 



