A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . CIrencK. Z/irexit Plate XIX. PAA$7U*y. Litfc D 2 36 DESTRUCTIVE INSECTS OE VICTORIA. PLATE XX. The Cottony-Cushion Scale (Icerya Purchasi.—Maskell). Fig. 1. Branch of orange showing young Icerya on leaves. Natural size. 2. Female, upper view. Slightly enlarged. 3. Female, under view, showing eggs. Slightly enlarged. 4. Female, side view. Slightly enlarged. 5 and 6. Young. Magnified (after Maskell). 7. Winged male. Magnified (after Maskell). 8. Antenna of
A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . CIrencK. Z/irexit Plate XIX. PAA$7U*y. Litfc D 2 36 DESTRUCTIVE INSECTS OE VICTORIA. PLATE XX. The Cottony-Cushion Scale (Icerya Purchasi.—Maskell). Fig. 1. Branch of orange showing young Icerya on leaves. Natural size. 2. Female, upper view. Slightly enlarged. 3. Female, under view, showing eggs. Slightly enlarged. 4. Female, side view. Slightly enlarged. 5 and 6. Young. Magnified (after Maskell). 7. Winged male. Magnified (after Maskell). 8. Antenna of male. Magnified (after Maskell). 9. Antenna of female. Magnified (after Maskell).10. Male. Slightly Magnified (after Maskell).. Plate XX. THE COTTONY-CUSHION SCALE. 37 CHAPTER XXV. THE COTTONY-CUSHION SCALE. {leerya Purchasii. Maskell.) Order : Hemiptera. Sub-order: Homoptera. Family : Coccididce. This insect is the much dreaded cottony-cushion scalewhich has made such havoc amongst the orange groves ofCalifornia, also at the Cape, and later on in Egypt andelsewhere. The female (see Plate XX., Fig. 2), is a dark reddish-brown cushion-shaped insect, covered with a thin powderof a whitish yellow colour, with slender filaments, and,according to Mr. Maskell, who described the insect, isstationary at gestation, gradually raising itself on itshead, lifting the posterior extremity until nearly perpen-dicular, filling the space beneath it with thick whitecotton, which gradually extends for some distance behindit in an elongated white ovisac (egg-bag), longitudinallycorrugated, ovisac often much longer than the insect, andbecoming filled with oval red eggs (see Plate XX., Fig. 3).Length of female about Jin., reaching s
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