42 



THE EEPOET OF THE 



No. 36 



cages, but we had no evidence that any eggs were laid. The remaining insects 

 either entered the soil to pupate or remained in the wheat heads. Apparently 

 fully 50 per cent, doing the latter. 



Eight-spotted Forester [Alypia octomaculata) . 



Near Toronto the larvte of this moth were very numerous on grape foliage. 



Halisidota tesselaris was unusually abundant this autumn and fed on numerous 

 plants. 



Halisidota caryce attacked in considerable numbers apple leaves in the 

 counties of Elgin, Oxford and Middlesex. 



Halisidota liarrisii destroyed much of the foliage on sycamore trees in parts 

 of the Niagara district. 



Diacrisia virginica was a great pest in gardens in many parts of the Province 

 and attacked numerous flowering and other plants. 



Datana inteqerrima defoliated walnuts in Essex and Kent. 



The larva of the Hickory Tussock- Moth {Halisidota caryce). 



Prof. Lochhead: Is this Blackberry Leaf-Miner a distinct species from 

 the rubi? 



Prof. Caesar: By looking at the two species ruhi and bethunei you would 

 say that they were exactly the same, but Dr. MacGillivray has found a few 

 differences. Both species are black, about ^4 iiich long, and the body is quite 

 black and the legs white, so that it is easy to recognize it as one of the two 

 species. A full description is given in MacGillivray's Tenthredinoidea. 



Mr. Gibson: Did you find both species during the work? 



Prof. Caesar: No. Only the one species. 



Mr. Gibson: Did you find this pest all through the Niagara district? 



Prof. Caesar: Yes. There is a species this side of Toronto which has 

 also been found almost as far as Port Hope. I do not know whether it is the same. 



Mr. Swaine: What was the strength of the spray used? 



Prof. Caesar: The same strength as for orchard sprays, 2^/^ lbs. to 40 

 gallons of water. 



Mr. Swaine : We have tried kerosene emulsion sprays, just ordinary summer 

 strength, on the leaf surface. I have killed them in strings with kerosene 

 emulsion and also with Black Leaf 40, strong. 



