Have you seen navel orangeworm symptoms?
In Queensland, the navel orangeworm (Amyelois transitella) is listed as prohibited matter under the Biosecurity Act 2014.
Be on the lookout for symptoms and report them to Biosecurity Queensland.
Early detection and reporting are the key elements in controlling the pest.
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Navel orangeworm (Amyelois transitella) is an exotic pest that feeds on a variety of fruit and nuts, including citrus. While the insect is a serious pest of some nut crops like almonds and pistachios, it also grazes on citrus fruit, causing surface scarring that allows decay-causing organisms to enter the fruit. This reduces fruit quality and causes fruit drop, reducing economic return.
Check for caterpillar frass near wounds in the fruit. Navel orangeworm larvae scavenge in splits and wounds of citrus fruit (such as naval oranges) and feed in or near the core. The larvae can overwinter in rotting or mummified fruit left on trees.
LarvaeThe larvae are white to pink with a dark reddish-brown head.
Navel orangeworm feeds on a variety of fruit and nuts.
It is a serious pest of nut crops such as English walnuts, pistachios and almonds, but also feeds on citrus, dates, figs, apples, pears and stone fruit.
Navel orangeworms occur in the United States, Canada and Central America (Caribbean and Cost Rica). It not known to occur in Australia.
|Spread of pest|
Long-distance spread occurs by movement of plant material infested with the larvae and pupae. The Australian Quarantine and Inspection Service closely regulates approved imports of host plants (whole or parts) and monitors for illegal plant movement.
|Management and quarantine|
Navel orangeworm is restricted matter under the Biosecurity Act 2014. If found it must be reported. There are simple steps you can take to protect your farm:
|Reference and acknowledgement|
Andrew Beattie (University of Western Sydney) and Ceri Pearce (Biosecurity Queensland, Department of Agriculture and Fisheries).