Circular scale
citrus industry. In more northern countries of its range, it occurs in greenhouses. In addition to citrus, it occurs on many other plants. Damage symptoms [...] In citrus, it tends to prefer the lower and central parts of mature trees. Circular scale prefers the leaves, but in high infestations it may spread to [...] Chrysomphalus aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and subtropical parts of the world,