Mustard saw fly

Mustard saw fly: Athalia lugens proxima 

Symptoms of damage:

  • Initially the larva nibbles leaves, later it feeds from the margins towards the midrib
  • The grubs cause numerous shot holes and even riddled the entire leaves by voracious feeding
  • They devour the epidermis of the shoot, resulting in drying up of seedlings and failure to bear seeds in older plants

Identification of the pest:

  • Larva: Greenish black with the wrinkled body and has eight pairs of prolegs. On touch the larva falls to ground and feigns death
  • Adult: Head and thorax is black in colourabdomen is orange colour, wings are translucent, smoky with black veins


  • Summer ploughing to destroy the pupa
  • Early sowing should be done
  • Maintain clean cultivation
  • Apply irrigation in the seedling stage is very crucial for sawfly management because most of the larvae die due to drowning effect. Severe cold reduces pest load.
  • Collection and destruction of grubs of sawfly in morning and evening
  • Conserve Perilissus cingulator (parasitoids of the grubs), and the bacterium Serratia marcescens which infect the larvae of sawfly
  • Use of bitter gourd seed oil emulsion as on anti- feedant
  • Spray the crop with malathion 50 EC @ 1000 ml/ha quinolphos 25 EC @ 625ml/ha. All this should be applied in about
    600 to 700 litres of water per ha.



  • TamilNadu Agritech Portal
Show Buttons
Hide Buttons