Fruit fly

Fruit fly: Bactrocera (Dacus) dorsalis 

Symptoms of damage:

  • Maggot bore into semi-ripen fruits with decayed spots and dropping of fruits.
  • Oozing of fluid
  • Brownish rotten patches on fruits.

Identification of pest:

  • Larva – Yellowish apodous maggots.
  • Adult – Light brown with transparent wing


  • Collect fallen infested fruits and dispose of them by dumping in a pit and covering with soil.
  • Provide summer ploughing to expose the pupa
  • Monitor the activity of flies with methyl eugenol sex lure traps.
  • Use bait spray combine any one of the insecticides and molasses or jaggery 10 g/l
    • malathion 50EC 2 ml/l,
    • dimethoate 30 EC 1 ml/l,
    • carbaryl 50 WP 4 g/l. two rounds at 2 weeks interval before ripening of fruits.
  • Prepare bait with methyl eugenol 1% solution mixed with malathion 0.1%.
  • Take 10 ml of this mixture per trap and keep them in 25 different places in one hectare
  • Heavy infestation – application of dust and sprays of pyrethrum
  • Spray malathion 50 EC 2ml/lit.
  • Field release of natural enemies Opius compensates and Spalangia philippines.



  • TamilNadu Agritech Portal
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