616 
Rep Scauz (Aspidiotus aurantii, Mask). 
This was, until some years ago, the most serious scale insect 
which the citrus fruitgrowers of this State had to contend against. 
It has a very wide range of food plants, and attacks all varieties of 
citrus fruits, and is often noticed attacking the quince, guava, pear, 
fig, loquat, mulberry, castor bean and rose as well as many other 
varden plants and shrubs. Leaves, fruits, and branches are attacked; 
and it occurs at times 
so thick upon the fruit 
of orange and lemon 
that its market value 
is destroyed. This 
seale belongs to the 
“armoured” ones. 
Description. — The 
colour of the female, 
when scale is formed, 
is light or primrose 
yellow, but as_ it 
Red Scale Parasite. (Enlarged.) reaches maturity it be- 
comes a brownish yel- 
low. The formation of the body is such that under the scale, when 
examined with a lens, its appearance is that of a broken ring, but 
when ovipositing, the posterior end of the abdomen extends beyond 
the circular line of the body. The colour of the natural insect is 
shown through the nearly transparent scale from which it derives 
its common name—Red Seale. 
Remedies—Use, during the summer months, Nos. 10, 14, 20, 
or fumigate with No. 18 (see pp. 528-531). The latter has given 
the best results. 
Natural Enemies—California made a long and continuous 
search for the parasite of this scale, but it was not discovered until 
1900, when it was found in China by Mr. Geo. Compére, and from 
there sent to California, where they were liberated in an orange 
grove well infested with red scale, and, notwithstanding that the 
owner of the grove promised the officers of the State Board of 
Horticulture that he would not spray or fumigate the trees in order 
to give the little parasite a chance to become established, this pro- 
mise, says Mr. Compére, the owner kept, so far as the spraying or 
fumigation, but turned to and cut out the trees and burned them, 
with no explanation to offer for his action, only that he had not 
promised not to burn the trees. 
During a subsequent visit of our entomologist to China in 1905, 
only a few seattered specimens of the red scale were to be found; 
