. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. INSECTS INJURIOUS TO THE BLACKBERRY. ATTAOKOa THE OANES. No. 186.—The Pithy Gall of the Blackberry. This curious gall, which is represented in Fig. 332, is some- times found on blackberry canes. It is about two or three inches long, of a dark- FiG. 332. (] QY reddish-brown color, oblong in form, with its surface un- even, with deep lon- gitudinal furrows, which divide the gall more or less com- pletely into four or five portions. It is caused by a small four-winged fly, D^- astrophus nebulosus Os
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. INSECTS INJURIOUS TO THE BLACKBERRY. ATTAOKOa THE OANES. No. 186.—The Pithy Gall of the Blackberry. This curious gall, which is represented in Fig. 332, is some- times found on blackberry canes. It is about two or three inches long, of a dark- FiG. 332. (] QY reddish-brown color, oblong in form, with its surface un- even, with deep lon- gitudinal furrows, which divide the gall more or less com- pletely into four or five portions. It is caused by a small four-winged fly, D^- astrophus nebulosus Osten Sacken. If a transverse section of this gall be made, there will be found about the middle a number of oblong cells about one-eighth of an inch long, shown at 6 in the figure, each contain- ing a single larva or pupa. The larva, which is represented enlarged at c, is about one-tenth of an inch long, white, with the mouth parts 318. ?). 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 Saunders, William, 1836-1914. Philadelphia, J. B. Lippincott & Co
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
