• Grubs bore into the rhizome and cause death of the plant
• Presence of dark coloured tunnels in the rhizomes.
• Death of unopened pipe, withering of outer leaves.

• Nymph: Oval translucent, Yellowish brown with waxy coating
• Adult: Female circular, semi transparent and pale brown

Management

• Collect and destroy the affected plant parts
• Field release of coccinelid predators like Chilocorus nigritus, Symnus coccivora