128 
The external scale is indistinguishable from the greedy scale, de¬ 
scribed later. 
The Oleander Scale ( Aspidiotus licderce Vail .=-<4 nerii Bouche; 
Fig. 44) is one of the most important and troublesome scales to the 
Fig. 44. Oleander Scale, Aspi- 
diotus hederce. About one twelfth 
inch in diameter. 
florists of this state, and has been found attacking oleander, or¬ 
chids, Phoenix sp. and P. canaricnsis, Areca verschaff cltii ,Kcntia , 
ivy, orange*, Cycas *, and Camellia*. It is one of the commonest 
scales infesting greenhouse plants, and is nearly cosmopolitan, 
having been recorded from Europe, Africa, Australia, and South 
America, as well as found in this country. The scale is nearly 
flat, circular in outline, about .08 inch in diameter, of a light gray 
color, with a pale orange or yellowish center or exuvium. Repro¬ 
duction is by means of eggs, which are pale yellowish and de¬ 
posited beneath the female scale. 
The Greedy Scale (Aspidiotus rapax Comst.) is another of the 
nearly cosmopolitan species, and its list of known food plants is 
very long. In this state it has been found only on Phoenix sp. 
and an undetermined palm, and is seldom troublesome. The scale 
is grayish, more or less translucent (the yellowish insect being 
visible beneath the external scale), convex, and with the exuvium 
slightly to one side of the center, marked as a blackish spot. 
The Circular or Florida Red Scale ( Chrysotnphalus aoniduni 
Linn — Aspidiotus ficus Ashm.; Fig. 45) is a common greenhouse 
scale, ranking in importance with the oleander scale. It is com¬ 
mon in greenhouses on grapefruit (Citrus decumana ), Latania 
borbonica, Ficus, Kentia sp., K. forsteriana, K. belmorcana, Phoenix 
sp., P. canaricnsis , and sago palm. The scale is circular, about 
.08 inch in diameter, somewhat convex, blackish, and with a nearly 
central orange or reddish orange exuvium. 
*Reported as a food plant, but not yet found infested in Illinois. 
