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Biological Control of Insect Pests: Southeast Asian Prospects - EcoPort

Biological Control of Insect Pests: Southeast Asian Prospects - EcoPort

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4 Target insect pests<br />

4.1 Agrius convolvuli<br />

India<br />

20°<br />

Myanmar<br />

P Laos<br />

P<br />

0°<br />

20°<br />

China<br />

++<br />

Thailand<br />

+<br />

Cambodia<br />

+<br />

Vietnam<br />

++<br />

P<br />

+ Brunei<br />

Malaysia<br />

Singapore<br />

++<br />

Indonesia<br />

Taiwan<br />

++<br />

Philippines<br />

P<br />

Australia<br />

Papua<br />

New Guinea<br />

+<br />

The moth Agrius convolvuli is widespread in the tropics and subtropics, except for the<br />

Americas where it does not occur.<br />

It is an important pest, sporadically, <strong>of</strong> sweet potato and also attacks several important<br />

legumes. For most <strong>of</strong> the time its populations are maintained at subeconomic levels,<br />

apparently by several trichogrammatid egg parasitoids. These could be considered for<br />

introduction as biological control agents where they do not already occur. The cause <strong>of</strong><br />

sporadic outbreaks is unknown.<br />

20°<br />

0°<br />

20°<br />

9

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