Description

• adults are about 1/4 inch long and ant-like in appearance
• head, snout and wings are a dark metallic blue and thorax and legs are bright red-orange
• larvae are legless grubs almost 1/2 inch long when full grown
• white with brown heads

Damage

• larvae tunnel through tubers, causing discoloration
• impart a bitter taste to the tuber
• infested sweet potatoes are unfit for human consumption