. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. ^t \^iix^uo rivuiio UiMJJZ/r^ 1I^.JV1^J^Aiiwin ff e\ 4 insects live under a scale, they are called scale insects, but in common usage the term insect has been dropped and the term scale is most frequently used. This sometimes causes confusion, especially when speaking of the adults of both sexes. In the more specialized scale insects, the females are station- ary in adult life; in other words, soon after the larvas are hatched from the eggs they settle down in one spot on twigs or leaves, insert their sucking mouth parts and remai
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. ^t \^iix^uo rivuiio UiMJJZ/r^ 1I^.JV1^J^Aiiwin ff e\ 4 insects live under a scale, they are called scale insects, but in common usage the term insect has been dropped and the term scale is most frequently used. This sometimes causes confusion, especially when speaking of the adults of both sexes. In the more specialized scale insects, the females are station- ary in adult life; in other words, soon after the larvas are hatched from the eggs they settle down in one spot on twigs or leaves, insert their sucking mouth parts and remain there throughout their existence. Their bodies usually lack legs, eyes, antennae, and wings. It is the female scale insect which has given rise to the term scale, because it is this scale that the grower ordinar- ily sees and fights. The fiattish, nearly circular little red spots or the more ovate blackish spots that are frequently seen on carelessly packed oranges are scale insects and are excellent examples of the female insect. The male scale insects, during their earlier stages of development, also secrete a scaly covering and develop under this protection. They resemble closely the immature female scale insects, though they are usually smaller, and sometimes the scale covering is slightly different in shape. The adult male insects, however, unlike the female scale insects, at the last stage of development, emerge from under the scales as two-winged insects that have eyes, antennae, and legs, but, strangely enough, have no mouth parts, nor mouth openings, so that they cannot take food during the adult period. Their period of life, therefore, during the adult stage, is of short dura- tion, usually a few hours or days at most. They live long enough to fertilize the females and then die. The male scale insects are much more rarely seen than the females, and for this reason are relatively imimportant. In these Sections, when speaking of scale insects, the term scale will appl
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Keywords: ., bookcentury1900, booksubjectcitrusfruits, booksubjectfruitcultur
