Swarming caterpillar

Swarming Caterpillar: Spodoptera mauritia

Symptom of damage:

  • Larvae cut the seedlings in large scale
  • Cattle grazed appearance is found at severely infested fields
  • They feed gregariously and march from field to field

Identification of insect pest:

  • Egg: eggs are spherical and creamy in colour, which is laid in a group covered over with grey hairs
  • Larva: caterpillars are light green with yellowish white lateral and dorsal stripes in the early stages and later become dark brown or grayish green in colour with a crescent (semi-circular) shaped black spot on the side of each segment
  • Pupa: pupates in an earthen cocoon in the soil. Pupa is dark brown and measures 16-17 mm long.
  • Adult: moth is medium sized, stout built dark brown with a conspicuous triangular black spot on the forewings.  Hind wings are brownish white with thin black margins.


  • Spray Chlorpyriphos 20% EC 1250 ml/ha during late evening



  • TNAU Agritech Portal.


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