80 



THE EEPOET OF THE 



No. 36 



cherries than the Plum Curculio. In some orchards it was difficult to find one 

 cherry out of five that did not contain a maggot. A few experiments on control 

 measures were tried, but there was not time to do the work thoroughly. I am 

 expecting to study these pests more carefully next year. 



Apple Maggot (Rhagoletis pomenella) . As Mr. Ross is giving an address on 

 the joint work being done on this insect by the Ottawa Dejjartment of Entomology 



Fig. 24. — Rose Chafer (Macrodactylus subspinosus) : a, beetle; b, larva; c and d, 

 mouth parts of same; e, pupa; /, injury to leaves and blossoms with beetles, natural 

 size, at work. (After Marlatt, U. S. Dept. Agriculture.) 



and our Department, I shall not make any further remarks on it than merely to 

 say that I hope that next year may be more favorable for the study of this insect 

 than this has been, and that if so, we may be able to finish the investigation in 

 Ontario unless some new phase of the subject presents itself to us. 



Rose Chafer {Macrodactylus suhspinosus) . In most districts the Rose Chafer 

 did much less damage than usual, but in one or two cases it appeared in new 

 districts and did considerable damage to grapes, raspberries, and young cherry 



25. — Pear and Cherry Slug. 



trees. A district thus attacked was composed, of a few orchards between Beamsville 

 and Lake Ontario. In one of the orchards arsenate of lead — four pounds to forty 

 gallons — sweetened with about a gallon of molasses was^ sprayed on the trees and 

 vines. The owner did not know whether it had done any good or whether the 



