Insects injurious to fruits . e, and later upon the motheralso. When full grown, it is nearly one-sixth of an inchlong, broad, becoming narrower towards the head, of a trans-parent white color tinged with blackish from the alimentarycanal showing through. The larva changes to a pupa withinthe scale, which at first is white, but soon becomes darker incolor; the fly, on escaping, makes its exit through a roundhole which it cuts in the back of the scale. No. 261.—The Hemisplierical hemisphcsricum Targioni. Fig. 424 representsthis scale, of its naturalsize, on orange leaves,and a ma
Insects injurious to fruits . e, and later upon the motheralso. When full grown, it is nearly one-sixth of an inchlong, broad, becoming narrower towards the head, of a trans-parent white color tinged with blackish from the alimentarycanal showing through. The larva changes to a pupa withinthe scale, which at first is white, but soon becomes darker incolor; the fly, on escaping, makes its exit through a roundhole which it cuts in the back of the scale. No. 261.—The Hemisplierical hemisphcsricum Targioni. Fig. 424 representsthis scale, of its naturalsize, on orange leaves,and a magnified one ata. It varies in colorfrom light to dark brown,and is occasionally tingedwith reddish when ma-ture. In shape it ishemispherical, with theedges flattened, its formvarying somewhat indifferent situations; upon l!|a rounded twig it be- ^i|^\comes less hemispheri-cal, more elongated, andits flattened edges arebent downwards, clasp-ing the twig. The eggs are yellow-ish white, smooth, andshining. The newly- FiG. 410 INSECTS INJURIOUS TO THE ORANGE. hatched larvae are very active, and even the adult insect cancrawl from one point to another with apparent ease, carryingthe scale with it. This scale has been found on orange-trees near Santa Bar-bara, and doubtless exists in other localities also. In green-iiouses it attacks not only the orange but many other plants. Fia. 425. No. 262.—The Common Mealy-bug. Dactylopius adonidum Linn. The insects known under the name of mealy-bugs form noscale, and are not always stationary, having the power ofmoving from one place to another; but, since they require treatment as scale-insects, it will be convenient to treatof them here. This species of mealy-bug is common ingreen-houses throughout the civilized world. The femaleis represented magnified in Fig. 425,with most of the mealy matter re-moved. Wiien full grown, it is aboutone-eighth of an inch long, white, witha tinge of yellow, a brown band uponthe middle of the
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