70 



did much damage in spite of all efEorts of control. Interest in practical 

 control measures is growing and more than 100 new power spraying- 

 outfits were purchased by the apple-growers of the Ajinapolis Valley 

 during the season. 



MooRHOUSE (II. J.). Insect pests of the year in Manitoba. — Agric. 

 Gaz. Canada, Ottaiva, i, no. 10, October 1914, pp. 809-812. 



Manitoba on the whole has been freer than usual from insect pests, 

 though a few species did considerable damage. Cutworms, especially 

 the red-backed cutworm, Euxoa ochrogaster, were unusually des- 

 tructive to oats and barley in one locality. At Morden, the spring 

 canker-worm, Paleacrita vernata, was found associated with the fall 

 canker-worm, Alsophilapo7netaria,hnt elsewhere the latter alone was the 

 cause of damage. Leaf -hoppers, presumably Empoasca sp., were very 

 plentiful both on trees and in grain fields during the dry June. The 

 red turnip beetle, Entomoscelis adonidis, was common on wild 

 Cruciferae in various places. Among forest insects, the larch sawfly, 

 Nematus erichsoni, and the spruce sawfly have continued their ravages. 

 In certain districts there was a somewhat damaging outbreak of the 

 wheat-stem sawfly, Cephus occidentalis. In a few instances the loss 

 probably exceeded thirty per cent., but this was only on the edges of 

 the fields where the flies had emerged and flown from the previous 

 year's stubble. Loss from this pest seems generally to have passed 

 unnoticed or to have been credited to other agencies, such as the wind 

 or Hessian fly. Wheat was injured to some slight extent early in 

 the season by wheat-stem maggots, Meromyza and Oscinis spp. 

 White grubs, Laclmosterna spp., likewise attacked cereals rather more 

 extensivelv than usual. 



Willing (T. N.). Principal recent insect injuries in Saskatchewan. — 



Agric. Gaz. Canada, Ottawa, i, no. 10, October 1914, pp. 812-814. 



In the early summer, cutworms were troublesome, including 

 Euxoa ochrogaster, Gn., Sidemia (Hadena) devastatrix, Br., Euxoa 

 (Ghorizagrotis) auxiliaris, Grt., and other species. Caterpillars of 

 Autographa and Phytometra (Plusia) have been more prevalent 

 and moths of six species were taken at night. The imported 

 €abbage-worm, Pontia rajme, L., and the diamond-backed moth, 

 Plutella maculipennis, Curt., were found in gardens, but not in 

 excessive numbers. There were numerous complaints of cabbage 

 maggots, Chortophila (Pegomyia) brassicae, and also of maggots 

 affecting onions. Leguminous plants have suffered from the attacks 

 of blister beetles in large numbers, Cantharis nuttalli. Say, being the 

 commonest, though the smaller Macrohasis unicolor, Kby., which 

 frequently attacks the potato, was found in abundance at the beginning 

 of July. Reports of the beet web-worm, Phlyctaenodes (Loxostege) 

 sticticalis, L., were received from various parts of the province. This 

 insect is a general feeder when abundant. Many poplar trees about 

 Saskatoon have suffered from the attack of a dark-coloured aphid, 

 probably a species of Chaitophorus. In some instances spraying with 

 kerosene emulsion diluted with water was effective against it. 



