52 THE REPORT OF THE No. 36 



Pear Psylla (Fsylla pyricda). There have been very few Psyllas seen in 

 the province this year, though here and there complaints of their presence have 

 been reported. 



Peach Tijee Boheks {Aegeria pictipes, Sanniiioidea exitiosa). In the 

 Niagara district a good many peach trees have cankers on the branches caused by 

 tlie so-called " Gummosis " disease. These wounds have given opportunity for the 

 entrance of borers, apparently the Lesser Peach-borers. From some of the new 

 peach districts of Elgin and Norfolk complaints of injury from Sanninoidea 

 exitiosa have also been sent in. In the Niagara district this insect is not often 

 very abundant. 



Bush Fruits. 



Imported Currant-Borer ,{ Aegeria tipuliforniis) . Nearly ever}' currant 

 plantation is becoming badly infested with tliis pest. It looks as if better sug- 

 gestions for control are badly needed. 



Red Spider {Tetranychus bimaculatus). One of the main causes for the 

 early dropping of currant foliage is the attack of numerous Red Spiders. Nearly 

 every plantation I examined in the Niagara district was affected by these mites. 



Raspberry Root-Borer {Bembecia marginata). Old plantations of rasp- 

 berries in Niagara are severely attacked by this insect. The remedy would appear 

 to be the plowing up of badly infested plots late in autumn after all the eggs have 

 been laid. All roots should of course be collected and burned. This is not a very 

 difficult task. Ploughing as soon as the crop is otf would also be satisfactory as 

 the adults have not then emerged but the growers are usually too busy. 



Vegetables and Field Crops. 



Pea x\phis {Macrosiphum pisi). There have been very few complaints of 

 injury from these aphids for three years. In south-western Ontario they have 

 ''fen troublesome again in a few localities this year. 



Cabbage Aphis {Aphis hrassicae). This pest is again becoming abundant 

 in many parts of the province but is not yet nearly so destructive as it was about 

 live years ago. 



Onion Maggot (Pegoniyia ceparum). Many plots of onions have been badly 

 infested with this maggot. Nothing more satisfactory in the way of control has 

 apparently been discovered than Cook^s carbolic wash, though this is by no means 

 an easy or entirely efficient remedy. 



Perillus bioculatus, var claudus. "We are (pleased to be able to report 

 the continued presence of this friend in our midst. Wliether owing to its aid or 

 some other cause or both, the potato beetles were so effectively kept under control 

 in a number of fields that spraying for them was not necessary. 



x\sparagus Beetj.es (Crioccris asparagi and C. 12- punctata) . Both these 

 insects are now widely spread through the province. The former occurred i-n 



