p 



1919 ENTOMOLOGICAL SOCIETY. 27 



Valley. There it is very destructive and is found in varying juimljers from 

 season to season. 



Mr. Eoss: This season I found the thrips only on pear and in only one 

 locality — Beanisville. Xext year I am 'going to look into the question of dis- 

 tribution more thoroughly. I should like to ask Mr. Davis if he can tell us 

 anything about the Eose Midge. 



Mr. Davis: I cannot tell you any more than what little I have published. 



Mr. Eoss : Do you know if it occurs all over the United States ? 



Mr. Davis : Everywhere east of the Mississippi Eiver. In connection with 

 the control of the midge, what you and others have published is all that is known 

 concerning it. 



Mr. Eoss: Mr. Sasscer of the U. S. Bureau of Entomology obtained absolute 

 control in a Baltimore greenhouse by fumigating with tobacco smoke and at the 

 same time covering the soil with tobacco dust. He fumigated the house as long 

 as the adults were seen. He also sprayed the sidewalks with kerosene emulsion 



INSECTS OF THE SEASON IN QUEBEC DISTEICT, 1918. 

 Geo. Maheux, Quebec. 



The summer of 1918 may be considered normal, as regards the insects 

 injurious to cultivated plants. We did not have to register any real plague, 

 and the common insects only appeared in rather small numbers. Only one pest 

 appeared to have increased in numbers, and this one has worked more damage 

 than usual in this district; it is the potato flea beetle, Epitrix cucumeris Harr. 



On the other hand, the Colorado potato beetle, although well represented, 

 shows a decrease compared with 1917. Certain districts in the northern part 

 of the Province, such as the Lake St. John district, were visited by only a few 

 individuals. It is advisable to note here that if the severe winter we have had 

 has contributed to the partial bankruptcy of the multiplication of pests, it is 

 equally important to emphasize the fact that for two or three years the use of 

 insecticides and sprayers has spread considerably. Moreover, the inquiries we 

 are receiving throughout the summer from farmers, and which are continually 

 increasing, show the importance that the latter now attach to the question of the 

 protection of plants. We consider as a remarkable improvement the fact that at 

 least 80 per cent, of farmers use an efficient insecticide for their potatoes. The 

 sale of sprayers yearly increases in a wonderful manner, and before long the 

 great majority of farmers will own a good spraying machine. 



The potato flea beetle, Epitrix cucumeris Harr., bored through the leaves of 

 tomato plants as well as potatoes, but the other vegetables only suffered an 

 occasional injury. Poison sprays check them rapidly. 



The various Cruciferae of our gardens have had to stand the attacks of 

 numberless cabbage worms (Pieris rapae L.). It was, without any doubt, the most 

 injurious pest of the season. Much difficulty was experienced to gather cabbages 

 and cauliflowers that were not infested. The cabbage maggot (Phorhi-a hrassicae 

 Bouche) like the cutworms, caused only insignificant damage. 



In most of the war gardens, which had been fallow lands for a long time, 

 potatoes were injured by white grubs (Lachnostern-a sp.) ; 10 per cent, of the 

 crop was spoiled for this reason. 



