Insects injurious to fruits . W. H. Ash meads Treatise on Orange Insectsunder the name of the white scale, Ceroplastes rusci are three broods during the year: the first appear inApril and May, the second from the middle to the end ofJuly, and the third during the first two weeks in increase with marvellous rapidity, but are preyed onby a species of Chalcid fly and by other insect enemies. No. 259.—The Broad hesperidum Linn. Fig. 416. Of all the bark-lice here treated of, few areso common, and none sowidely distributed, asthis species. It is foundin abun
Insects injurious to fruits . W. H. Ash meads Treatise on Orange Insectsunder the name of the white scale, Ceroplastes rusci are three broods during the year: the first appear inApril and May, the second from the middle to the end ofJuly, and the third during the first two weeks in increase with marvellous rapidity, but are preyed onby a species of Chalcid fly and by other insect enemies. No. 259.—The Broad hesperidum Linn. Fig. 416. Of all the bark-lice here treated of, few areso common, and none sowidely distributed, asthis species. It is foundin abundance fromWashington southwardto Florida, also in Utahand California, on thetwigs of orange andother trees, shrubs, andplants; but, having somany different food-plants, it is not so de-structive to the orangeas are some others whichconfine their attacks totrees of the Citrus scale is brown, some-tinies quite dark, and isrepresented of its natu-ral size on the stem ofFig, 416. It is one of the largest scales found. tiie twiir in INSECTS INJURIOUS TO THE ORANGE. 405 on the orange; it is of an elongated, oval form, and highlyconvex. The enclosed insect is yellow, inclining to brown,of an elongated, oval form, nearly flat, smooth, and shining. The yonng larva (see Fig. 417) is of a long, oval form, ofa yellowish color, with two long thread-like fila-ments extending from the hind segment. This bark-louse is much infested by parasites, noless than three distinct species having been bredfrom the scales. The first of these, Coccophagus cognatus Howard(see Fig. 418), is a very small, four-winged fly, thefemale of which, when its wings are spread, measures aboutone-twelfth of an inch, the male about one-sixteenth. The
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