36 THE REPORT OF THE No. 36 



was quite plentiful in the spring, and several reports were received, particularly 

 from Jordan, to the effect that it was seriously injuring raspberry blossom buds. 



Mr. Garlick found the eggs of this species tucked in between the glandular 

 hairs on the pedicel of the flower and close to the bud or just on it. On hatching 

 the larvae bore into the receptacle, and as the berries ripen, they are found 

 tunneling in the white hull or feeding on the berry. Infested hulls turn black 

 and soft, the berry becomes soft and is easily shaken off. 



Raspberry Leaf-Roller (Exartema permiindaniim). Leaves webbed 

 together by this species were quite commonly found in raspberries and black- 

 berry patches in the Niagara peninsula, particularly at Fenwick. However, 

 in no instance was the injury serious. 



Gooseberry Fruit Worm {Zophodia grossulariae) . It is seldom that one 

 finds any trace of this insect in Ontario, hence it seems worth recording that 

 it was found doing considerable damage to red currants in one locality in Carleton 

 County and was sent in from Russell County with the report that it was injuring 

 gooseberries. 



Strawberry Weevil (Antho7tom.us signatus), and the Strawberry Leaf 

 Beetle (Paria canella) were again abundant in some strawberry patches in 

 the Niagara district. The latter was very abundant also at Campbellville. 



Insects Affecting Vegetables or Truck Crops 



Cabbage Maggot (Phorbia brassicae). There was less injury than usual 

 this year from the Cabbage Maggot. 



Onion Maggot (Hylemyia antiqiia). This insect was relatively more 

 abundant and destructive than its close relative, the Cabbage Maggot. 



Onion Thrip (Thrips tabaci). On the whole there appeared to be less 

 injury from this thrip than last year, as one would expect from a comparison 

 of the amount of moisture in the two seasons. 



Striped Cucumber Beetle (Diabrotica vittata). The beetles varied greatly 

 in numbers in different parts of the province, and even in different fields in the 

 same part. In Norfolk and Niagara there were several fields of cucumbers 

 severely injured while other fields were scarcely at all attacked, the worst 

 attacked fields being those in which cucumbers had been grown the previous 

 year or those situated close to where they had been grown. A study of the life 

 history and control of the insect has been begun by the senior writers, and will 

 be continued next year. It may be mentioned in passing that so far neither of 

 the writers has found the nicotine dust satisfactory. It stupefies the insects, 

 but almost ^all recover later. 



Melon Aphis {Aphis gossypi). This aphis was decidedly injurious to 

 melons and cucumbers at Vineland. 



Imported Cabbage Worm (Pieris rapce). This year, as in 1921, these 

 worms were abundant towards the end of the summer, and along with Cabbage 

 Looper did great damage to the leaves of cabbage, cauliflower and in some 

 cases turnips. 



Cabbage Looper (Autographa brassicce). As just mentioned this looper 

 was very abundant this fall; in fact, it has been more abundant in 1921 and 1922 

 than at any time for the last ten or twelve years. 



Rhubarb Curculio (Lixus concavus). Usually this insect is difficult to 

 find, and does insignificant damage, but this year from several localities it was 

 reported as being so abundant as almost to ruin the crop. One plot near Cayuga 

 was visited and the complaint found to be justified, many of the leaf stalks 

 having from six to twelve feeding or egg-laying punctures. The tissues around 



