. Annual report. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY, 43 To witness the deadly effects of oil upon an insect, apply with a feather or camel's- liair brush a drop of linseed oil to the body of a troublesome hornet or bumble-bee buzzing in the window. The end comes quickly ! The oil is not taken into the stomach of the insect, but is spread over its body, and clogs its breathing-pores, and the insect dies. The aphides left to run their course, at length give rise to a generation of winged insects ; and these proceed to make the preliminary arrangements
. Annual report. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY, 43 To witness the deadly effects of oil upon an insect, apply with a feather or camel's- liair brush a drop of linseed oil to the body of a troublesome hornet or bumble-bee buzzing in the window. The end comes quickly ! The oil is not taken into the stomach of the insect, but is spread over its body, and clogs its breathing-pores, and the insect dies. The aphides left to run their course, at length give rise to a generation of winged insects ; and these proceed to make the preliminary arrangements for the next year's (round of aphidean gatherings and festivities. The aphides are named according to the plants they frequent. Thus we have :— The aphis of the apple, A. mali, Fabricius. " " plum leaves, A. prunifolu, Fitch. " " currant, A. ribis, Linnaeus. " " cherry, Myzus cerasi, "^abricius. " cabbage, A. brassicce, Linnaeus, etc, etc. An easy way of smoking a house-plant is to turn an empty flour barrel over it, at the same time inserting a suitable vessel containing two or three pinches of tobacco and a small live coal. The smoke will soon do its work. For the destruction of that troublesome insect the woolly aphis or " American Blight " (Schizoneura lanigera, Hausmann) (Fig. 7) which is found in white patches on the apple trees, the use of a scrubbing brush with diluted soft soap is recommended. By this means the insects are crushed and the tree cleansed at the same time. The house plants may be freed from that trouble- pest, the common mealy-bug (Daeiylopius adonidum, Linnaeus) by more gentle treatment of like nature. The aphides have many natural foes. Among them are various kinds of lady-birds* the lace-winged flies and syrphus flies, all of which are predaceous upon them—destroying them from without; and an aphidius which is parasitic, destroying them from within. Insects even more difficult to deal with than the
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
