• Grubs are white in colour
• Adult is a dark brown beetle with long antennae

Nature of damage

• Larva cause damage
• Defoliation

Nature of damage

• Grub cause damage
• Grubs bore the bark and feed on sapwood by tunneling and finally enters the heartwood
• Presence of bore holes
• Tunnels packed with fragments of wood

Management

• Felling in winter
• Debarking before march
• Conversation of infested trees into sleepers
• Cotton soaked in 0.5% dichlorvos 76 EC (5 ml / lit.) can be kept inside the bore hole and plugged with mud

Mango Stem Borer – Batocera rufomaculata

Biology

• Full grown larva is fleshy white in colour
• Adult is a large, stout grey coloured longicorn beetle with two pink dots and lateral spines on thorax

 
Nature of damage

• Beetle feed on the bark of living unhealthy trees by gnawing or eating the green tips
• Larval tunnels packed with very coarse frass of wood and bark

Grub feed on meristem in the beginning and later deeper in sapwood

Management

• Unhealthy trees should be felled and converted before the emergence of adults
• Cotton soaked in 0.5% dichlorvos 76 EC (5 ml / lit.) can be kept inside the bore hole and plugged with mud