Cotton cushion scale - Icerya purchasi

"Icerya purchasi" is a scale insect that feeds on more than 65 families of woody plants, most notably on "Citrus" and "Pittosporum". Originally described in 1878 from specimens collected in New Zealand as pests of kangaroo acacia, it is now found worldwide where citrus crops are grown. The cottony cushion scale originates from Australia.