. A text-book of agricultural zoology. Zoology, Economic. Fio. 72.—SuTG-woEM OF Peae (Briommpa Ivmadna). Slug-worms and Snegs, on account of their slimy slug-like ap- pearance. They feed on the upper surface of the leaves, eating only the upper epidermis, and leaving the lower intact (fig. 74). When very numerous the leaves turn brown, die, and fall off in the summer, and a fresh lot of foliage takes its place, thus weakening the trees. "We have seen young trees killed outright by them. The adult Sawfly (fig. 73) is a small glossy black insect, about one- fourth of an inch in length; the
. A text-book of agricultural zoology. Zoology, Economic. Fio. 72.—SuTG-woEM OF Peae (Briommpa Ivmadna). Slug-worms and Snegs, on account of their slimy slug-like ap- pearance. They feed on the upper surface of the leaves, eating only the upper epidermis, and leaving the lower intact (fig. 74). When very numerous the leaves turn brown, die, and fall off in the summer, and a fresh lot of foliage takes its place, thus weakening the trees. "We have seen young trees killed outright by them. The adult Sawfly (fig. 73) is a small glossy black insect, about one- fourth of an inch in length; the wings are iridescent, with the middle area smoky black, and are about three-quarters of an inch „ Fio. 73.—Pear Sawflt (Brwmmpa from tip to tip. The parent fly Umacima), and cocoon. comes out of the ground beneath the trees in the spring, generally in April. In most cases a. 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 Theobald, Frederick Vincent, 1868-1930. Edinburgh and London, W. Blackwood and sons
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1899
