. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 50 REPORT OF No. 19 damage to tomato plants. Cabbage-worms (Pieris rapce) were very abund- ant this year, and were especially injurious to cabbages and Brussels sprouts, as well as to mignonette and nasturtiums in the flower garden. Wbite-grubs, the larvse of May-beetles or "June-bugs" {Lachnosterna) —fig. 12—caused much damage to the roots of strawberry plants at Wal- lace, and were grievously complained of in consequence of their injury to lawns and golf-links at London, Woodstock, Pari
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. 50 REPORT OF No. 19 damage to tomato plants. Cabbage-worms (Pieris rapce) were very abund- ant this year, and were especially injurious to cabbages and Brussels sprouts, as well as to mignonette and nasturtiums in the flower garden. Wbite-grubs, the larvse of May-beetles or "June-bugs" {Lachnosterna) —fig. 12—caused much damage to the roots of strawberry plants at Wal- lace, and were grievously complained of in consequence of their injury to lawns and golf-links at London, Woodstock, Paris, Watford, Durham, Cold- stream and elsewhere. In the case of lawns and boulevards in cities and towns, where the affected area is not very large, spraying liberally with kerosene emulsion and washing it in with plenty of water, has been found somewhat effective. When the roots of the grass are so devoured that the turf will roll up like a carpet, which was the case in some places, it seems as if the only plan would be to remove a few inches of the soil beneath the sod containing the grubs, and then to replace with fresh earth and resod. In an enclosed garden poultry may be turned in to devour the grubs; robins and other birds render useful assistance also. Where the attack is on golf links, it would be found serviceable to enclose the infested spots with hurdles. Fig. 12.—May Beetle: a, beetle; 6, pupa; c, larva (White Grub)—slightly enlarged. (Chittenden, Bull. 19, Div. of Ent., Dept. of Agr. and turn in a few pigs; these would soon root up and devour the grubs and could then be removed to another place. The parts of the field thus treated might then be levelled and resodded or sown with grass-seed. In ordinary cases the grubs thrive in old pastures, where they live underground for two or three years. A proper rotation of crops and the breaking up of all such fields is by far the most effective method of dealing with the insect. When the beetles are flying
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