- 83 - 



PART OF PLANT ATTACKED. 



Leaves, fruits, and stems. The stems of roses are often covered 

 with this scale and in most cases seem to be preferred to the leaves. 



REMARKS. 



This scale is found all over Egypt, but fortunately does very 

 little damage. It attacks most species of Citrus biit lemons, bitter 

 oranges, and pomelos, for which it shows preference, are species of 

 Citrus which it happens are not much grown. Certain species of 

 ROSAOE/E get heavily attacked. 



Owing to the extensive fumigation campaign against the Black 

 Scale in this country the Red Scale does very little damage to the 

 Citrus trees. Roses, however, get heavily attacked and the best 

 remedy for such attacks is an application of paraffin emulsion. 



39. Diaspis boisduvalii Sign. 



BIBLIOGRAPHY : Newstead, Mon. Brit. Cocc., Vol. i, p. 153. 



Puparium of adult female approximately circular or ovate, low 

 convex, semi-transparent, revealing the sublying female and eggs. 

 This gives it a dull yellow colour and a wax-like appearance. Kxuviic 

 towards the centre are pale yellow (after Newstead loc. tit.}. 



Diameter 1-25-2-25 millimetres. 



Mr. Laing remarks with reference to my material of this species 

 that " this material seems referable to this species in spite of the 

 absence of the thoracic tubercle ; this is not always present." 



HOST PLANTS. 



Palmacese On an unknown species of ornamental palm. 



REMARKS. 



This species has only been collected twice, on each occasion in 

 Cairo on the same host plant. 



40. Diaspis carueli Targ. 



BIBLIOGRAPHY: Newstead, Mon. Brit. Cocc., Vol i, p. 162. 



Female puparium approximately circular but more usually 

 somewhat elongated, convex, white, but always dusted over, giving 

 it a greyish appearance. Pellicles pale translucent yellow and within 

 the margin. 



Male puparium tricarinate : median carina well marked, lateral 

 carinse indistinct. Pellicle pale yellow. 



Diameter of female puparium about 1 millimetre. 



