Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . ent, exposure tothe fumes of bisulphide of carbon is a good remedy, as is alsosaturating with gasoline or benzine. A liberal use of paint withplenty of turpentine is indicated in other cases, and sometimesmere cleanliness following the destruction of hopelessly infestedmaterial will answer every purpose. Of the same general shape, but larger and broader, with smoothinstead of striated wing-covers and a humped form, is theLasioderma serricorne, popularly known as the tobacco-
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . ent, exposure tothe fumes of bisulphide of carbon is a good remedy, as is alsosaturating with gasoline or benzine. A liberal use of paint withplenty of turpentine is indicated in other cases, and sometimesmere cleanliness following the destruction of hopelessly infestedmaterial will answer every purpose. Of the same general shape, but larger and broader, with smoothinstead of striated wing-covers and a humped form, is theLasioderma serricorne, popularly known as the tobacco- or cigarette-beetle. It is a great lover of tobacco in all its forms,the larva relishing plug, long or fine cut, chewing or smoking, incigarette, cigar, or leaf, almost equally well, and injuring itmaterially for the human user of the weed. The matter is animportant one to manufacturers, who deal with it in a variety ofways ; but it does not particularly interest the farmer. Among the wood-feeders the species of Rostrychus and Sin-oxylon are of interest, their larvae sometimes boring into fruit-trees. 13 Fig. Fig. i8o, cigars injured by the tobacco-beetle, Lasioderma serricorne; holes showwhere the beetles issued. Fig. i8i, Lasioderma serncor>ie, from above and 182, the death-watch, Sitodrepa panicea, larva and beetle, from above and side;much THE INSECT WORLD. 195 The apple-twig borer, Amphiccrus bicajtdatus, is about theonly species needing especial remark, and this beetle bores intosmall apple-twigs in early spring, entering close to a bud andmaking a channel several inches in length, apparently for foodand shelter merely. It remains in these burrows a short timeonly, and then lays its eggs in the dead or dying roots of cat- FiG. 183.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
