![]() Inland armyworm ( Persectania dyscrita).Southern armyworm ( Persectania ewingii).There are 3 common species of armyworm found in southern Australia: In the unusual event of extreme food depletion and crowding, they will 'march' out of crops and pastures in search of food, which gives them the name 'armyworm'. The change in feeding habit is caused by depletion of green leaf material or crowding. They are the only caterpillars that growers are likely to encounter in cereal crops, although occasionally native budworm will also attack grain when underlying weed hosts dry out.Īrmyworms mostly feed on leaves, but under certain circumstances will feed on the seed stem, resulting in head loss. Armyworms are caterpillar pests of grass pastures and cereal crops.
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