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Australian Plague Locusts

The Australian Plague Locust is a native Australian insect that rarely occurs in Victoria. When it does occur, it can be in extremely large numbers aggregated into dense bands or swarms and can cause significant damage to agricultural production, to community assets such as parks, bowling greens, and golf courses, and to private assets such as lawns, vegetable gardens, and vehicles.

The biology and the cause of outbreaks are described in detail in the
identification and biology page.

Situation Overview

Egg-bearing locusts were recorded during Autumn 2009 in a few isolated areas in northern Victoria. It is not expected that there will be any significant hatching of locusts from these areas in Spring 2009, although scattered hatchings may occur.. Read the full situation overview.
Photo: Plague locust adult
Figure 1. Adult Australian Plague Locus

Controlling Locusts

It is important to control locusts early in the season to minimise potential damage to crops and pastures. Locusts are easiest to control during their early life-cycle stage when they are hoppers and unable to fly. Once they become adults, it is much more difficult and expensive to effectively treat locust infestations. Read more about controlling locusts and locust incursions since 2000.



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