Insects injurious to fruits . 332 hXSKCTS INJVRlUiS TO Till-: STRAW HE RRY. there will be found in each, about the centre, a small, milk-white, iootlcs-s grub, semi-transparent, with a smooth, glossyskin, a wrinkled surface, and a few fine, short hairs. Its jawsare pale brown, and its length at this period is about one-sixteenth of an inch, the body tapering a little towards eachextremity. This insect doubtless changes to a pupa withinthe gall, from which flies escape later in the season, or earlythe following spring. No. 200.—The Strawberry Saw-fly. Emphytus maculatus Norton. This insect in t
Insects injurious to fruits . 332 hXSKCTS INJVRlUiS TO Till-: STRAW HE RRY. there will be found in each, about the centre, a small, milk-white, iootlcs-s grub, semi-transparent, with a smooth, glossyskin, a wrinkled surface, and a few fine, short hairs. Its jawsare pale brown, and its length at this period is about one-sixteenth of an inch, the body tapering a little towards eachextremity. This insect doubtless changes to a pupa withinthe gall, from which flies escape later in the season, or earlythe following spring. No. 200.—The Strawberry Saw-fly. Emphytus maculatus Norton. This insect in the perfect state is also a four-winged fly,which in the larval condition is very destructive to the leavesof the strawberry. The accompanying figure, 346, illustratesthe insect in its various stages; 1 shows the under side ofthe pupa, 2 a side view of the same, 3 the perfect fly, all Fia. magnified ; 4 the larva crawling, 6 the same at rest, 5 theperfe(;t insect with its wings closed, and 7 the cocoon, all ofthe natural size; 8 one of the antcnnre, and 9 an egg, bothmagnified. The egg is placed within the substance of thestem of the leaf early in May by means of the peculiar saw- ATTACKING THE LEAVES. 333 like apparatus with which the female is provided. It isabout one-thirtieth of an inch long, and of a white color;its presence produces a slight swelling on the stalk, and by-splitting the stalk so as to open the swelling the egg may befound. The eggs absorb moisture from the stem and increasein size, and in about a fortnight hatch, when the young larvseat once begin to feed on the leaves. At first they attract butlittle attention, as the holes they make in the leaves are small,but as they increase in size they often completely riddle thefoliage and destroy its usefulness. When full grown, they are nearly three-fourths of an inchlong, of a pale-greenish color, with a f
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Keywords: ., bookauthorsaunderswilliam183619, bookcentury1800, bookdecade1880
