98 



THE EEFOIiT OF THE 



Xo. 36 



Tussock ^Joth (Ilemerocampa leucostigma). As J'oifcaslud in last year's 

 re])oit, little or no injury was done by this species. 



Fall Webwokm (llypJiantria cuiiea). The unsightly webs of this spc-^.s 

 were again very conspicuous throughout the province. However, according to our 

 observations the insect was not so abundant as it was last year. 



Plum Curculio {Conolrachelus nenuphar). This species was unu-^ually 

 destructive in the Niagara District. It was especially injurious to peaches and 

 was responsible for a large "■ drop." In a peach orchard at Winona o\er 50 )ier 

 cent, of the crop was destroyed by it. 



Unspotted Tentifoum Leaf Miner {Ornix geminatella). This unimpurt- 

 ant a])ple insect was common in some orchards in the Niagara District and Norl'ilk 

 County. 



Fig. 5. — Cherry leaves and fruit injured by the Pear 

 Slug. Note the wizened fruit. 



Silver Leaf Mite (Pliyllocoptes scUlechtendali) . Practically all the foliage 

 ill a block of seedling peaches at the Horticultural Experiment Station, Vineland, 

 was affected with silver leaf. This same disease was quite common in other peach 

 orchards in the Vineland district; and in every case Ave examined we found it was 

 caused by the mite Phyllocoptes. It is of interest to note that according to onr 

 observations this mite hibernates under the protection of the bud scales and between 

 the leaf petioles and the base of the bud. 



Eose Leaf-hopper (Empoa rosae). In late summer and fall myriads of 

 rose leaf-hoppers were present in many apple orchards in the Niagara District 

 and Norfolk County and produced a characteristic mottling of the leaves. In a 

 large infested orchard at Sinicoo practically all the foliage liecame pallirl and in 



