468 



Journal of Agriculture , Victoria. [lo Aug., 1912. 



The Red Scale {Aspidiotus rossi) : This pest must not he confused 

 with the " Red Orange Scale '' {Aspidiotus aurantii). It belongs to the 

 great family coccididse. the members of which are responsible for a great 

 amount of damage every year to both fruit and ornamental trees. It is 

 one of the most common of the scale here. It appears to flourish some- 

 what better in the coastal regions than in the inland areas ; this is due, in 

 part, perhaps, to the presence of more succulent vegetation, more equable 

 conditions, and the greater shelter in the dense foliage of .southern wood- 

 knds. 



This scale differs considerably from Lecauium olca, inasmuch as it 

 appears to secrete very little honevdew, con.sequently very little of the 

 black fumagine that lives on this secretion, and is so conspictious a feature 

 of the latter's presence, is noticeable. 



OLIVE LEAVES SHOWING ATTACK OF SOOTY MOULD. 



The treatment adopted for the Black 01i\e Scale should be applied' 

 jilso for this one. 



-The White or Oleander Scale {Aspidiotus nerii) : This scale sometimes 

 attacks the olive as well as a number of other evergreen trees. It has a 

 very wide distribution, and is very hard to dislodge when once vi^ell estab- 

 lished. It is greyish white in colour, often changing to greyish brown. 

 The scales are about i-25th to i-i2th of an inch in diameter. The female- 

 puparium is almost circular and somewhat larger than that of the male, 

 which is small and elongated. Owing to the absence of the " Scotv 

 Mould Fungus " with this and Aspidiotus rossi. it is more difficult to 

 detect an early attack than in the case of, for instance, Lecanium olece. 

 When once they are discovered, however, no time should be lost in apply- 

 ing the most effective remedies. 



Treatment. — This should be carried out with contact spravs or fumiga- 

 tion, as is recommended for Lecanium olecE. 



