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The olive lace bug, Froggattia olivinia, is native to eastern Australia. It has become established in the olive growing regions of Western Australia.
Black scale (Saissetia oleae) is a major pest of Australian olives, reducing tree vigour, yield and the quality of fruit and oil.
Brown spot is a fungal disease caused by Nothophoma quercina. It affects jujubes in Western Australia and has been reported in olives, pistachios and Chinese quince in other countries.
African black beetle (Heteronychus arator), is native to southern Africa. It has been present in Western Australia since the 1930s and occurs in the wetter coastal regions.