. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES, 355 Fig. 366. No. 217.—The Red Spider. Tetranychus telarius (Linn.). This is a very small mite, which often proves a serious pest to gardeners, especially to those who cultivate plants under glass. Occasionally, in dry weather, it attacks the leaves of the black currant and destroys them. Fig. 366 represents the male of this species, very much enlarged, the mite itself being scarcely visible to the unaided eye; the small dot within the circle at the side of the figure indicates
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES, 355 Fig. 366. No. 217.—The Red Spider. Tetranychus telarius (Linn.). This is a very small mite, which often proves a serious pest to gardeners, especially to those who cultivate plants under glass. Occasionally, in dry weather, it attacks the leaves of the black currant and destroys them. Fig. 366 represents the male of this species, very much enlarged, the mite itself being scarcely visible to the unaided eye; the small dot within the circle at the side of the figure indicates the natural size of the insect. It spins a web on the under side of the leaves, of threads so slender as to be scarcely visible even with an ordinary magnifying-glass until woven into a net-work. Under this shelter wall be found a colony, x' consisting of mature individuals of both sexes and young mites of all ages. By the aid of their jaws, which are not unlike the beak of a bird, they tear away the surface of the leaf, and plunge their beaks into the wound and suck the juice. The egg of this mite is nearly round, and colorless; the larva is a minute, transparent object, not unlike its parent, but it has only six legs, and creeps along slowly. The mature mites have eight legs, and vary much in color, some being greenish marked with brown specks, others rust-colored or reddish, and many of them brick-red. The leaves attacked soon indicate the presence of this in- vader by their sickly hue; the sap being sucked by a mul- titude of tiny mouths, they soon assume a yellowish cast, with patches of a grayish or lighter shade; and if the mite is allowed to pursue its course unchecked, the foliage becomes. 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
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
