A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . racted to them, eat, and die. These baitsshould be renewed several times, at intervalsof two to four days, according to the state ofthe weather and the abundance of the of these cut-worms are attacked by sev-eral kinds of parasites, both hymenopterous and are also devoured by a number of predaceous beetles,while birds of many kinds are
A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . racted to them, eat, and die. These baitsshould be renewed several times, at intervalsof two to four days, according to the state ofthe weather and the abundance of the of these cut-worms are attacked by sev-eral kinds of parasites, both hymenopterous and are also devoured by a number of predaceous beetles,while birds of many kinds are especially fond of them. One ofthese dipterous parasites is shown in Fig. 30, and another atFig. 31. THE FALL ARMY ^ [Laphygma frugiperda Guen.) Very closely related to the cut-worms,and resembling them much in generalappearance and habits, is an insect thathas received the popular name of GrassWorm or Fall Army Worm. This in-sect is shown in Fig. 32, where the ma-ture insect is figured. This insect is fre-quently very numerous, and is accord-ingly very destructive. Although calledthe Grass Worm, it is by no means con-fined to grasses as its diet. Corn andother grain crops are just as eagerly at-tacked and devoured by Fig. 32.—Lapkygma fru-giperda: moth, showingvariations. [After Riley.] INSECT ENEMIES OF SMALL GRAINS. 225 Since this is such an important insect, and as I have not treatedof it before in any of my reports to the Society, I will give aquite full description of it here. The following characteriza-tions of the insect are copied from Prof. S. A. Forbess accouniof the insect in the fourteenth report of the entomologist ofIllinois: Moth.—Front wings narrow, apex broadly rounded. Generalcolor brownish-gray, varied with bluish white, dusky and bluish white patch at the apex of the wing, usually containing afew black points. Subterminal line arcuate, of the same color, con-tinuous, with this patch in front, sometimes obsolete at the terminalpoin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894
