This attracts males, which emerge in the afternoon. Although they live for only one day, the males can move about 100 m upwind. Females produce 60 to 150 nymphs over a ten-day period. The majority have settled one day later. During the cold season, scale insects usually congregate on the sunnier parts of the foliage while, in the summer, they move to shadier zones.
Reproduction is greatest during uniformly hot and dry conditions.
Summer heat, combined with even slight humidity, causes considerable mortality amongst newly emerged nymphs under the maternal scale. It is very difficult to distinguish between generations, which considerably overlap. Under favourable climatic conditions, there are four generations per year. Overwintering takes place inall instars. D amage - The species is deleterious to Citrus .