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  • No 68 Cosmopolitan Army Caterpillar

No. 68 Cosmopolitan Army Caterpillar

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Key Points:

  • Identify cosmopolitan armyworm by the smooth green-brown skin with a thin whitish line down the back and dark lines on each side. Differentiate it from the rough and spiked skin of corn earworm (Heliothis).
  • Control of grass weeds will reduce the risk of outbreak populations.
  • Cultivation may lower in fi eld populations of pupae and larvae (caterpillars) but moths can fly in from other grass habitats.
  • Scouting crops is important for several weeks after silking.
  • The army worm parasitoid wasp, Cortesia rufi crus, can give 70 - 95% mortality which is generally suffi cient control for maize crops.
  • Registered insecticides are available should parasitism be insufficient.

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