. Economic entomology for the . Scales on wing of butterfly. 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 wdngs 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 enormousl
. Economic entomology for the . Scales on wing of butterfly. 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 wdngs 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
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublishernp, bookyear1896
