42 



THE EEPOET OF THE 



No. 36 



Sulphur Dust : Preliminary experiments indicate that heavy applications of 

 sulphur dust will control the mite. 



Literature Cited. » 



iCaesar, L., Can. Ent. XLVII, No. 2, pp. 57-58, 1915 

 sGarman, P. Bulletin 226, pp. 184-189, Conn. Agr. Exp. Sta., 1921. 

 3Garman, P., Journ. Econ. Ent., 14, pp. 355-368, 1921. 



w 



INSECTS OF THE SEASON IN ONTARIO. 



A. Ross, Dominion Entomological Laboratory, Vineland Station, and 

 L. Caesar, Provincial Entomologist, O.A.C. Guelph. 



Orchard Insects. 

 Codling Moth (Carpocapsa pomonella) . The very hot weather throughout 

 July aroused f eara that there would be an abnormally large percentage of second 

 brood larvae and consequently a much greater amount of injury to apples and pears. 



Lygus injury on peaches. Note the unsightly scars. 



Fortunately these fears were not realized to any marked extent, apparently because 

 the weather became comparatively cool in early August and remained "moderately 

 cool throughout that month. 



Plum Curculio :(t)onoirach&lus nenuphar). In some localities this pest did 

 much harm, but in most parts of Ontario it was not more troublesome than usual. 



Cigar and Pistol Case-Bearers (Coleophora fletcherella and C. malivorella) . 

 These two insects, usually considered minor orchard pests, were remarkably abun- 

 dant in the Newcastle district. Almost every apple orchard which had not been 

 well-sprayed the previous year, or which had only received the post-blossom ap- 

 plication, was badly infested. In June many of the trees were almost completely 

 defoliated and what foliage was left was brown and ragged. In one case about 30 

 acres of Stark trees were so severely damaged that the brown, blighted appearance 

 of the trees was conspicuous a mile away. A cursory examination this fall of af- 

 fected trees indicated that the outbreak was over. 



Bud Moth (Tmetocera ocellana,). In the Newcastle apple orchards, infested 

 with case-bearers, the bud moth was also quite abundant and contributed its shaxe 

 of injury to the foliage. In other parts of the province it was not especially con- 

 spicuous. 



