. Insect architecture. Insects. 234 INSECT ARCHITECTURE. caterpillars, the track of whose progress appears on the upper surface in winding lines. Let us take one of the most common of these for an example,—that of the rose-leaf, produced by the caterpillar of Ray's golden-silver spot (Argyromiges Rayella? Curtis), of which we have just gathered above a dozen speci- mens from one rose-tree.*. Leaf of the Monthly Rose (Rose Tndica). mined by Caterpillars of Argyromigest It may be remarked, that the winding line is black, closely resembling the tortuous course of a river on a map,—beginning like
. Insect architecture. Insects. 234 INSECT ARCHITECTURE. caterpillars, the track of whose progress appears on the upper surface in winding lines. Let us take one of the most common of these for an example,—that of the rose-leaf, produced by the caterpillar of Ray's golden-silver spot (Argyromiges Rayella? Curtis), of which we have just gathered above a dozen speci- mens from one rose-tree.*. Leaf of the Monthly Rose (Rose Tndica). mined by Caterpillars of Argyromigest It may be remarked, that the winding line is black, closely resembling the tortuous course of a river on a map,—beginning like a small brook, and gradually increasing in breadth as it proceeds. This representation of a river exhibits, besides, a narrow white valley on each side of it, increasing as it goes, till it terminates in a broad delta. The valley is the portion of the inner leaf from which the caterpillar has eaten the pulp (parenchyma), while the river itself nas been formed by the liquid ejectamenta of the insect, the watery part becoming evaporated. In other species of miners, however, the dung is hard. 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 Rennie, James, 1787-1867. London, M. A. Nattali
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectinsects, bookyear1846
