. Insect architecture. Insects. PSEUDO-GALLS. 397 habitations which they have abandoned. We have sometimes observed sprigs of the lime-tree, of a thumb's thickness, portions of which resembled spiral screws ; but we could not certainly have assigned the true cause for this twisting, had we not been ac- quainted with the manner in which aphides contort the young shoots of this tree.* The shoots of the gooseberry and the willow are sometimes contorted in the same way, but not so strikingly as the shoots of the lime. Pseudo-Galls. It may not be out of place to mention here certain anomalous excre
. Insect architecture. Insects. PSEUDO-GALLS. 397 habitations which they have abandoned. We have sometimes observed sprigs of the lime-tree, of a thumb's thickness, portions of which resembled spiral screws ; but we could not certainly have assigned the true cause for this twisting, had we not been ac- quainted with the manner in which aphides contort the young shoots of this tree.* The shoots of the gooseberry and the willow are sometimes contorted in the same way, but not so strikingly as the shoots of the lime. Pseudo-Galls. It may not be out of place to mention here certain anomalous excrescences upon trees and other plants, which, though they much resemble galls, are not so distinctly traceable to the operations of any insect. In our researches after galls, we have not un frequently met with excrescences, which so very much resemble them, that before dissection we should not hesitate to. Pseudo-galls of the Bramble, drawn from a specimen. * Reaumur, vol. 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
