Circular scale
occurs on many other plants. Damage symptoms Chrysomphalus aonidum has a preference for humid environments. In citrus, it tends to prefer the lower and central [...] and adults have flat to moderately convex, circular scales up to 2 mm in diameter with a slightly raised, sub-central point which is sometimes pale. When [...] male is 0.7 mm long and has a single pair of wings. First-instar nymphs are 0.3 mm long and have legs, but soon settle to form circular, initially white