Appearance
The adult female ''Ceroplastes ceriferus'' is immobile, being permanently attached by its mouthparts to the plant on which it is feeding. The body is hidden under a roughly convex, circular or oval covering of wax which it has secreted; this is white in nymphs and young adults, and becomes pinkish in older individuals. Adults have a forward-pointing waxy horn and there are waxy filaments projecting from the margin of the scale, giving the insect a daisy-flower-like appearance. In many populations, only females exist, giving birth by parthenogenesis.
Status
''Ceroplastes ceriferus'' can occur on branches, twigs and foliage. It feeds on the sap of its host plant causing lack of vigour, wilting, shedding of leaves and dieback. On poplar, one of the main hosts, the bark is discoloured and peels off in patches. On ornamental plants the insects are unattractive, and the honeydew they copiously produce encourages the growth of sooty mould, which is both unsightly and blocks out the light, reducing photosynthesis.
Habitat
''Ceroplastes ceriferus'' is a polyphagous insect, meaning that it feeds on a wide variety of different plants. It has been recorded as utilising plants in 108 genera in 60 different families as hosts. These include such cultivated crops as apple, pear, plum, citrus, mango, tamarind, fig, pomegranate, avocado, tea, coffee, squash and pepper, as well as many ornamental plants.References:
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