. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. *iS> About the middle of August some berries in the bunches of grapes may be seen shrivelling up; on opening these, many of them will be found to contain only one seed, and that of an unusually large size; other larger^berries will contain two seeds, also swollen, most of the seeds having a dark spot somewhere on their surface. On cutting open these seeds, the kernel will be found almost entirelv consumed, and the cavity occupied by a small, milk-white, footless grub, with a pair of brown, hooked
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. *iS> About the middle of August some berries in the bunches of grapes may be seen shrivelling up; on opening these, many of them will be found to contain only one seed, and that of an unusually large size; other larger^berries will contain two seeds, also swollen, most of the seeds having a dark spot somewhere on their surface. On cutting open these seeds, the kernel will be found almost entirelv consumed, and the cavity occupied by a small, milk-white, footless grub, with a pair of brown, hooked jaws, a smooth and glossy skin, with a few very fine, short, white hairs. Fig. 308 shows this larva highly mag- nified ; the small figure beneatii indicates its natural size. The larva changes to a chrysalis within the seed during the spring months, and in July emerges as a fly, escaping through a small, irregular hole. The fly so much resembles that shown in Fig. 309 (which represents a closely-allied form belonging to the same genus) that it is difficult to distinguish between ^^^' the two ; a represents the female, b the male, c the antenna of the female, d that of the male, e the abdomen of the female, showing the segments or rings of the body, / that of the male. All these figures are highly magnified; the short hair-lines underneath the flies indicate the natural size. The fly is black; the head and thorax are finely punctated with minute dots; the abdomen is long and smooth, with a polished surface, and is placed on a short. 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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Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
