16 



THE KKPOIJT (JF TPiE 



No. 36 



Insects Attacking Field Ckops. 



Locusts. These insects were abundant in large numbers near Ottawa, par- 

 ticularly in light sandy districts. At Bowesville, about six miles from Ottawa 

 swarms of them were present iu oat, barley, timothy, and corn fields, and much, 

 damage was effected. Potatoes and beans were also attacked. In August an 

 investigation was made ol' some of the fields where the locusts were present in 

 thousands, and much destruction was seen. The species chiefly responsible for the 

 damage was the Lesser Migratory Locust, Melanoplus atlanis. The Pellucid 

 Locust, Camnvla pellucida, wa'^ the other species present which was doing damage, 

 but this was in mudi smaller nuuibei's than J/, atlanis. In some fields poisoned 

 bran had been spread, and while large numbers of the insects were killed, the 

 attack was not by any means stopped. The poisoned bran had been applied after 

 the locusts had acquired their wings. Better results, of course, would have been 

 secured if the application had been made during: tlie l^opping stage. 



Fig. 2. — Carnation buds eaten out by Variegated Cutworm 

 (original). 



Root Maggots. These insects were again prevalent throughout the district. 

 The Cabbage, or Radish Root-Maggot, was frequently complained of as attacking 

 cauliflowers, cabbages, radishes and turnips. The Onion Maggot, also, did con- 

 siderable damage, but no report of the work of the Seed-corn Maggot was received. 



Other common pests, such as Cutworms, Flea-beetles, and White Cabbage 

 Butterfly were present in destructive numbers. 



