Bark borer

Bark borer: Indarbela tetraonis 

Symptoms of damage:

  • Young trees may succumb to the attack.
  • Caterpillars bore into the trunk or junction of branches
  • Caterpillars remain hidden in the tunnel during day time and come out at night, feed on the bark.
  • Presence of gallery made out of silk and frass

Identification of pest:

  • Larva – Stout and dirty brown in colour.
  • Adult
  • Stout yellowish –brown moth with brown wavy markings on the forewings
  • Hind wing is a white colour.
  • Males are smaller than the females.


  • Remove and destroy dead and severely affected branches of the tree
  • Remove alternate host, silk cotton and other hosts
  • Grow tolerant mango varieties viz., Neelam, Humayudin.
  • Padding with monocrotophos 36 WSC 10 ml in 2.5 cm /tree soaked in absorbent cotton.
  • If infestations are severe then apply the copper oxychloride paste on the trunk of the tree.
  • Hook out the grub from the bore hole – apply monocrotophos 36 WSC 10 to 20 ml/ hole
  • One celphos tablet (3 g aluminum phosphide) per hole
  • Apply carbofuran 3G 5 g per hole and plug with mud.



  • TamilNadu Agritech Portal
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