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 . Fig. 33—Tomwus ca ographus.[ Fig. 34.—Mine of Scolytus unispino-sus. [After J. B. Smith.] parts of the United States, and certainly needs to be watched in thisstate. It is especially liable to attack- such of our trees as have suf-fered from blight. REMEDIES. It is quite a difficult matter to fight these bark borers, and we areobliged to depend mostly on
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 . Fig. 33—Tomwus ca ographus.[ Fig. 34.—Mine of Scolytus unispino-sus. [After J. B. Smith.] parts of the United States, and certainly needs to be watched in thisstate. It is especially liable to attack- such of our trees as have suf-fered from blight. REMEDIES. It is quite a difficult matter to fight these bark borers, and we areobliged to depend mostly on their natural enemies for keeping themin check. Professor A. S. Packard, in treating of one of these insects,writes (5th Kept. U. S. Entomological Commission, p. 710) as follows,when speaking of remedies: This, and the other bark-beetles of the pine, have numerous insectenemies which wage incessant war upon them. Various species ofsmall beetles pertaining to the families Staphylinidce, Hiakridce, etc.,are always to be met with under the loose worm-eaten bark of pines,and M. Perris has ascertained that these insects resort to this situationfor the purpose of rearing their young, their larvae being predaceousand subsisting upon the larvse and pupae of the bark be
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894
