Stem Girdler: Sthenias grisator

• Damage was done by female beetle which girdles the branches and inserts whitish spindle shaped eggs singly into the tissue in a slanting manner. Due to mechanical injury caused by girdling and oviposition, the branches above the girdle wither and dry.

Damage by stem girdler

Adult stem girdler

Management

• Swab Coal tar + Kerosene @ 1:2 or carbaryl 50 WP 20 g / litre (basal portion of the trunk - 3 feet height) after scraping the loose bark to prevent oviposition by adults.
• Hook out the grub from the bore hole (or) apply carbofuran 3G 5 g/bore hole and plug with mud.
• Injection of dichlorvas (DDVP) bore holes after removing the webs and subsequently sealing of the holes with clay gives satisfactory control of the pest.