One of the mysteries of the English language finally explained.
An Australian scale insect with a large fluted cottony egg sac, infesting citrus trees. It threatened to destroy the Californian citrus industry until it was controlled by the introduction of the Australian vedalia beetle.
Icerya purchasi, family Margarodidae, suborder Homoptera
- ‘In the late 1880s, for example, predaceous ladybird beetles imported from Australia had decimated the cottony-cushion scale insect that was consuming citrus crops in California.’
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