Red hairy caterpillar

Red hairy caterpillar: Amsactaalbistriga, A. mooreii

Symptoms of damage:

  • These hairy caterpillars scrap the under surface of the leaf when they are in neonate stage
  • Later the scrapped patches of the leaves looks like thin papery
  • Fully grown larvae devour the entire foliage, flowers and growing points

Identification of the pest:

  • Larvae: hairy caterpillar reddish brown with black band on either end having long reddish brown hairs all over the body
  • Adult:  moth with white wings 

Amsacta albistriga:

  • Forewing- white with brownish streak all over and yellowish streak along the anterior margin and head
  • Hind wing- white with black markings 

Amsacta moorei:

  • Forewing – white with brownish streak all over and reddish streak along the anterior margin and head 


  • Collection and destruction of egg masses and hand picking of larvae
  • The barnyard millet (Echinochloea frumentacea) may act as strong barrier
  • Summer ploughing and poison baiting
  • Erection of light traps soon after the monsoon for 20-45 days, collecting and killing of adult moths are found to be very effective
  • The dispersing larvae of hairy caterpillar from one field to another can be checked by digging trenches across the direction of their march, and prompt destruction of larvae
  • Vegetative traps utilizing Jatropha (wild castor) or Ipomea prevent the migration of the grown up larvae
  • Prepare small balls with10 kg rice bran+1 kg jaggery+1 litre quinolphos broad-cost in the fields preferably in the evening times
  • Dusting of carbaryl or quinolphos @ 25-30 kg/ha would be effective in the control of young larvae
  • Use of 200 ml dichlorovos 100 EC dissolved in 400 litres of water/ha may be used to control grown up caterpillars
  • Spray QuinalPhos or dimethoate 2ml, 2 ml/lit of water.



  • TamilNadu Agritech Portal


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