Bark eating caterpillars

Bark eating caterpillars: Indarbella sp.

Symptoms of damage:

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

Identification of pest:

  • The adult is stout yellowish –brown moth with brown wavy markings on the forewings.
  • Males are smaller than the females.

Management:

  • Remove and destroy dead and severely affected branches of the tree
  • Remove alternate host, silk cotton and other hosts
  • Swab Coal tar + Kerosene @ 1:2 or Carbaryl 50 WP 20 g / lit of water on the basal portion of the trunk up to 3 feet height
  • Scraping the loose bark to prevent oviposition by adult beetles.
  • 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
  • After applying monocrotophos 36 WSC 10 to 20 ml/ hole
  • Apply carbofuran 3G 5 g per hole and plug with mud.

 

Source-

  • TamilNadu Agritech Portal