. Annual report. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY OF ONTARIO. 61 eggs on their bodies. From these eggs in a short time hatch white maggots which feed inside the bodies of their hosts until full grown, when they force their way out and, falling to the ground, which they enter a short distance, they pupate, and change to flies either the same autumn or the next spring. Prof. Riley describes graphically the operation of egg-laying by one of these Tachina flies, and much the same thing was observed by Mr. J. E. Richardson of Princeton, Ont., last July.
. Annual report. Entomological Society of Ontario; Insect pests; Insects. ENTOMOLOGICAL SOCIETY OF ONTARIO. 61 eggs on their bodies. From these eggs in a short time hatch white maggots which feed inside the bodies of their hosts until full grown, when they force their way out and, falling to the ground, which they enter a short distance, they pupate, and change to flies either the same autumn or the next spring. Prof. Riley describes graphically the operation of egg-laying by one of these Tachina flies, and much the same thing was observed by Mr. J. E. Richardson of Princeton, Ont., last July. Prof. Riley says: " The slow- flying locusts are attacked while flying, and it is quite amusing* to watcb the frantic efforts which one of them haunted by a Tachina fly, will make to evade its enemy. The fly buzzes around waiting her opportunity, and, when the locust jumps or flief, darts at it and attempts to attach her egg under the wing or on the neck. The attempt frequently fails, but she perseveres until she usually accomplishes her object. With those locusts which fly readily, she has even greater difficulty ; but, though the locust tacks suddenly in all directions in its efforts to avoid her, she circles close around it and generally succeeds in accomplishing her purpose, either while the locust is yet on the wing, or, more often, just as it alights from a flight £• • or a ; Locusts infested with these parasites are more languid than they otherwise would be ; yet they seldom die until their unwelcome guests leave them of their own accord. Probably the most efficient worker in keeping down the undue increase of grass- hoppers is the Locust Mite (Trombidium locustarum, Riley), and it has been extremely prevalent and very often observed during the past summer. As it is seen attached to grasshoppers, generally at the base of the wings, it bears little resemblance to an insect and few recognize it as such the first time they examine it. The bright red swol
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
