Insect pests of farm, garden and orchard . rding to their capa-bihties. Control.—The pest may l)e successfully controlled by sprayingwith whale-oil soap, 1 pound to 2 gallons of water, rose-leaf insec-ticide, 1 pint to 4 gallons of water, or kerosene emulsion dilutedS to 10 times. Tobacco decoction (see page 55) will prol:)ablyprove equally effective, using it as strong as necessary. Probably1 pound of stems to 2 gallons of water will be satisfactory. Thespraying should be done very thoroughly so as to reach the insectsin the axils of the leaves, and th(> soil around the plant also shouldhe
Insect pests of farm, garden and orchard . rding to their capa-bihties. Control.—The pest may l)e successfully controlled by sprayingwith whale-oil soap, 1 pound to 2 gallons of water, rose-leaf insec-ticide, 1 pint to 4 gallons of water, or kerosene emulsion dilutedS to 10 times. Tobacco decoction (see page 55) will prol:)ablyprove equally effective, using it as strong as necessary. Probably1 pound of stems to 2 gallons of water will be satisfactory. Thespraying should be done very thoroughly so as to reach the insectsin the axils of the leaves, and th(> soil around the plant also shouldhe well wet to destroy the mature nymj)hs tluit may l)e hiding. The Imported Onion-maggot * T\\2 common white maggot which bores into the roots and l)ulbs causing them to wilt and decay, is probably the mo^. important insect pest of the onion. The present species is by far the most commonly injurious and is termed imported because * Pegomyia ceparum Bouch^. Family Anthomyiidce. See same referencesas for cabbage-maggot, footnote, page Y^o 303—T/^c imported onion-maggot {Pegomijia ceparum Bouche): a, adult; b, maggot; c, puparium; d, anal segment of maggot showing spiracles; e, head with mouth-parts—all very much enlarged, J and g show injury to young onions, (After J. B. Smith.) 421 422 INSECT PESTS OF FARM, GARDEN AND ORCHARD it was early known as a pest in Pkirope and was imported intotliis country probably in colonial times. These maggots are the offspring of small flies, somewhatresembling small houseflies and very similar to those of the cabbageroot-maggot (see page 347).* The wings expand about three-eighths of an inch and the body is half that long. The male isgray with black bristles and hairs, the face is white with blackhairs, there are three black lines between the wings, and the abdo-men bears a row of black spots along the middle. The female is alittle larger, inclined to dark yellowish, and with a yellowish face. Life History.—The flies appear n the spr
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