Insects injurious to fruits . Fig. INSECTS INJURIOUS TO THE ORANGE. 409 as seventy-five per cent, of the scales have been known to bedestroyed by it. The female fly pierces the scale and depositsin it a single egg. When hatched, the larva feeds npon theeggs and young of the bark-louse, 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 becom
Insects injurious to fruits . Fig. INSECTS INJURIOUS TO THE ORANGE. 409 as seventy-five per cent, of the scales have been known to bedestroyed by it. The female fly pierces the scale and depositsin it a single egg. When hatched, the larva feeds npon theeggs and young of the bark-louse, 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 formvar
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