Cottony cushion scale
first ever example of successful classical biological control. The cottony cushion scale has subsequently spread widely through most of the tropical and [...] and subtropical countries of the world. It is also periodically discovered in greenhouses in temperate regions, but is not generally a pest in these situations [...] scale is a particular pest of citrus, Acacia spp ., Casuarina spp . and Pittosporum spp ., but it can damage many types of fruit and forest trees, and