UK invasive species

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Harlequin ladybird

  • The harlequin ladybird was originally introduced to the United Kingdom as a biological control agent to manage populations of aphids and other agricultural pests.
  • The large size, broad diet and high reproductive rate of the harlequin ladybird give it an advantage over native ladybirds, as does its ability to live in a broad range of habitats.
  • In cooler weather when there is a lack of aphids, the harlequin ladybird may eat fruit crops, which can cause economic loss.