. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Entomology; Pests. Fig. 249. Scales on wing of Head of a moth. — The tongue uncoiled at a; seen from side, partly coiled, at b ; the appearance of tongue under a lens at c. times a difference even in the sexes, certain kinds of highly developed scales occurring on the wings of the male only, usually confined to limited areas and sometimes concealed by folds. In this order the adult insects are harmless throughout, capable of feeding only upon liquid food by m
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Entomology; Pests. Fig. 249. Scales on wing of Head of a moth. — The tongue uncoiled at a; seen from side, partly coiled, at b ; the appearance of tongue under a lens at c. times a difference even in the sexes, certain kinds of highly developed scales occurring on the wings of the male only, usually confined to limited areas and sometimes concealed by folds. In this order the adult insects are harmless throughout, capable of feeding only upon liquid food by means of a tongue which is usually coiled like a watch-spring on the under side of the head between the palpi. In some instances it is wanting, and on the other hand sometimes becomes enormously developed, reaching a length in some species of from five to nearly seven. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, John Bernhard, 1858-1912; Metcalf Collection (North Carolina State University). NCRS. Philadelphia and London : J. B. Lippincott co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
