Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . feed in light landon the roots of various plants, but principally on grass. Theypupate in spring, shortly before changing to the ?dult condition,and by ploughing infested sod at this time a large proportion canbe destroyed. When only moderate numbers occur, lime oftenserves to protect the plants, or, better, the Bordeaux mixture,which is distasteful to them. The May-beetles, or June bugs, sometim^^s termed cockchafers, are much larger, and mostly members of the genus THE INSE
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . feed in light landon the roots of various plants, but principally on grass. Theypupate in spring, shortly before changing to the ?dult condition,and by ploughing infested sod at this time a large proportion canbe destroyed. When only moderate numbers occur, lime oftenserves to protect the plants, or, better, the Bordeaux mixture,which is distasteful to them. The May-beetles, or June bugs, sometim^^s termed cockchafers, are much larger, and mostly members of the genus THE INSECT WORLD. 20I Lachnosteryia. They fly at night, are readily attracted to light,and often come into rooms, clumsily and noisily bumping againstall sorts of obstructions until they eventually strike somethingwhich sends them heavily to the floor. We have many speciesmore or less resembling each other, and all chestnut brown oryellowish in color. Some years they are very abundant andcause injury by eating the foliage of trees or shrubs. I havefound them eating pieces out of the stalks of recently set apples Fig. May-beetle.—i, pupa in earthen cell ; 2, larva or white grub ; 3, 4, beetle,from side and above. and pears, causing the fruit to wilt and drop. The larvae liveon grass and other roots, and are typical white-grubs. Culti-vated crops are frequently attacked and much injury is some-times caused. The larval period has not yet been satisfactorilydetermined for all species, and varies, as does also the time forchanging to the adult condition. Frequent rotation and fallploughing are to be recommended, and where grass lands areinfested, heavy top-dressings of kainit and nitrate of soda haveproved beneficial. Wherever ploughing is done in infested fields,chickens should be encouraged to follow in the furrow to pickup the grubs. Where young trees are to be protected from the beetles, jarringthem mto an umbrella two or three times early in the evening 202 AN ECONOMIC ENTOMOLO
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
