A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . me. Do not waitfor this, but tackle the pest at once and keep at it, asfrom personal experience I know that even this scale canbe mastered. THE COTTONY-CUSHION SCALE. 45 Keep your trees in vigorous health, avoid planting anyof the Citrus family either too deep in the soil, too closetogether, or in water-logged situations, as trees and plantsof all kinds are, when unhealthy, more liable to beattacked by insects of most kinds. The more vigorousthe growth of the plant the less
A handbook of the destructive insects of Victoria, with notes on the methods to be adopted to check and extirpate them . me. Do not waitfor this, but tackle the pest at once and keep at it, asfrom personal experience I know that even this scale canbe mastered. THE COTTONY-CUSHION SCALE. 45 Keep your trees in vigorous health, avoid planting anyof the Citrus family either too deep in the soil, too closetogether, or in water-logged situations, as trees and plantsof all kinds are, when unhealthy, more liable to beattacked by insects of most kinds. The more vigorousthe growth of the plant the less will be the trouble of thegrower. 46 DESTRUCTIVE INSECTS OF VICTORIA. PLATE XXI. The Oleander Scale (Aspidiotus Nebii.—Bouche). Fig. 1. Branch of orange, showing scale on stem and leaves. Natural size. 2. Female scale. Female scale. Natural size. 3. Male scale. Male scale. Natural size. 4. Female scale, showing hole through which parasite has issued. Magnified. 4a. Natural size of Fig. 4. 5. Female, perfect. Magnified. 6. Male, perfect. Magnified. (After Cooke.) 7. Parasite. C CJfrUtU&tviX. Dei Dire&ct [late HI SartJs * I THE OLEANDER SCALE. 47 CHAPTER XXVI. THE OLEANDER SCALE. (Aspidiotus Nerii. Bouche.) Order : Hemiptera. Sub-order : Homoptera. Family : Coccididce. A greyish white, often light greyish brown, scaleinsect, with female puparium nearly circular (see PlateXXL, Fig. 2), flat, diameter about TXT of an inch. Malepuparium oval (see Fig. 3), white or greyish brown, aboutTJT of an inch in length. Adult female yellow, peg-topshaped (see Fig. 5), but almost globular; abdomen endingin six lobes, of which the two median are the largest;between and a little beyond the lobes are a number ofscaly serrated extremities, also some scaly but smoothhairs, &c. Adult male (see Fig. 6) yellow or brownish,antennae of ten joints, each with several hairs. As many of the scale insects are often difficult torecognise from drawings, it ha
Size: 1213px × 2059px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorti, bookcentury1800, bookdecade1890, booksubjectinsects
