Insects injurious to fruits . one spot, where they remain stationary. The male insect isa very minute fly, which is shown, highly magnified, in It has long antennae and two transparent wings. This species is found on trees of the Citrus familythroughout Florida, also in Louisiana, infesting the twigsand branches, and finally the leaves, but rarely the are three broods in a season. It is said to have beenimported from China, and has since been disseminated bythe distribution of infested nursery stock and by the fruititself. This insect also has some special parasites; one,
Insects injurious to fruits . one spot, where they remain stationary. The male insect isa very minute fly, which is shown, highly magnified, in It has long antennae and two transparent wings. This species is found on trees of the Citrus familythroughout Florida, also in Louisiana, infesting the twigsand branches, and finally the leaves, but rarely the are three broods in a season. It is said to have beenimported from China, and has since been disseminated bythe distribution of infested nursery stock and by the fruititself. This insect also has some special parasites; one, a tinyfour-winged fly, Aphellnus aspidioticola Ashmead, is aboutone-fiftieth of an inch long, of a light-brownish color, with 394 INSECTS INJURIOUS TO THE ORANGE. fringed wings. (See Fig. 405.) It lays an egg under eachscale, the larva from which is a white, fleshy, footless grub, Fig. Fig. 405. that feeds upon the eggs. By the time it has consumedthem all it has reached full growth, when it changes to a pupa, and, after remaining inthis condition a few days, thefly escapes by eating a passagethrough the top of the this parasite does notoccur, it may be introduced withadvantage by taking into thelocality branches infested withscales which are known to havebeen parasitized. This useful insect destroys immense num-bers of the scales, and is doubtless one of the chief naturalagencies provided to check their undue increase. A species of mite, Oribates aspidioti Ashmead, has beenfound feeding on the eggs of this scale-insect. It is aboutone-fiftieth of an inch long, of an elongated, flattened formand a dark reddish-brown color.
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
