Narrow distribution. Common in Pacific island countries on wide range of crops, including ginger, chillies, eggplant, kava, passionfruit, root crops.
Larvae burrow into roots, stems and storage organs.
Adult weevil and West Indian sweet potato weevil (WISPW) similar. Ginger weevil covered in fine scales, with no clear white pattern on wing cases; WISPW with thinner scales and clear white markings on the wing cases (see Fact Sheet no. 119).
Cultural control: check planting material for carry-over larvae; treating ginger and yams for nematodes (hot water at 51°C for 10 mins) will kill weevils; check at harvest and avoid storing infested roots, corms, tubers.
Chemical control: thiram/latex mixture painted on passionfruit cankers (Samoa). Possibly, dipping planting materials in imidacloprid.