Pest insects

Pest insects can have adverse and damaging impacts on agricultural production and market access, the natural environment, and our lifestyle. Pest insects may cause problems by damaging crops and food production, parasitising livestock, or being a nuisance and health hazard to humans.

Western Australia is free from some of the world's major pest insects. Biosecurity measures on your property are vital in preventing the spread of insects.

The Department of Primary Industries and Regional Development provides:

  • biosecurity/quarantine measures at the WA border to prevent the entry of pest insects
  • where relevant post border biosecurity measures
  • advice on widespread pest insects present in the state.

For advice on pest insects search our website, the Western Australian Organism List or contact our Pest and Disease Information Service (PaDIS).

For diagnostic services, please contact our Diagnostic Laboratory Services.

Articles

  • Garden weevil (Phlyctinus callosus) was accidentally introduced into Western Australia from South Africa. This weevil is now a severe pest of grapevines and other horticultural crops.

  • Citrus gall wasp is a pest of citrus trees grown in backyards and orchards. Citrus tree owners are encouraged to implement control measures on their property to reduce the threat to the citrus indu

  • Queensland fruit fly is not present in Western Australia, but is occasionally detected and requires an eradication response to contain and prevent further spread.

  • Western Australia has a low prevalence of citrus pests and diseases compared to most other countries.

  • Find out more about the most common insect pests of citrus trees occurring in home gardens in Western Australia and their control using natural or low toxic chemical controls.

  • The olive lace bug, Froggattia olivinia, is native to eastern Australia. It has become established in the olive growing regions of Western Australia.

  • Apple looper (Phrissogonus laticostata) is a native insect that damages fruit in apple orchards and vineyards in the South West of Western Australia.

  • Apple dimpling bug (Campylomma liebknechti) adults feed on developing fruitlets of apples, pears, nashi pears and occasionally summerfruit (stone fruit) resulting in distortion that makes

  • Queensland fruit fly (Qfly, Bactrocera tryoni) is native to Australia.

  • Mediterranean fruit fly (Ceratitis capitata) is a serious horticultural pest in Western Australia. It attacks a range of cultivated fruits and some fruiting vegetables.

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