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

  • Mealybugs (family Pseudococcidae) are oval-shaped, segmented, soft-bodied insects covered with white, mealy wax. They are often found between touching fruit, under the calyx or in the 'navels' of o

  • 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.

  • Australian meat ants (Iridomyrmex purpureus gp) are a native ant species.

  • Coastal brown ants (Pheidole megacephala), also called big-headed ants, are a major nuisance ant species in Western Australia. They are an urban pest and are often seen in lawns and in bri

  • Argentine ants, Linepithema humile, are a major cosmopolitan pest ant species, primarily of the suburbs, which often enter houses in search of food and moisture.

  • Citrus leafminer, Phyllocnistis citrella Stainton, is the only leafminer attacking citrus in Australia.

  • Invertebrate pests can cause extensive damage to truffles.

  • Four species of aphids on citrus are recorded in Australia but only two occur in Western Australia, the brown/black citrus aphid Toxoptera citricidus (Kirkaldy) and spiraea aphid, Aphi

  •  Light brown apple moth female adult on a grapeleaf

    A range of species of Epiphyas fruit moths occurs in WA. The most abundant are light brown apple moth, E. postvittana and 'western fruit moth' E. pulla.

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

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