AVRDC International Cooperators'
Fact Sheet

Mungbean Insect Pests
 

Asiatic Corn Borer
Ostrinia furnacalis

Damage symptoms

Small, dark colored entry holes can be found on the stem or pods. An accumulation of frass around these holes is common. The stem and leaves above the entry holes are wilted.


Insect characteristics

Chewing mouthparts. The larva is cream-colored and marked with brown spots on its back. There are two spots per segment of the body. The adult female moth is pale yellow brown with irregular bands across its wings. The male is marked in the same but much darker color. Both are strong fliers and active only at night.

Internal damage
Internal damage 

Where to look
Inspect the plants for indications of wilting. Look for small piles of frass on the stems or pods. If there are entry holes, open the pods or stem and look for the caterpillar.


Technical information
One female lays 500-1500 eggs in groups mainly on the undersides of leaves. Hatching occurs within 3 days. When feeding is completed, pupation occurs within the stem or mungbean pod. Depending on temperature, multiple generations may occur in one season. Maize is also a common host for this pest.


Control
To be added later.
 

Last updated: 2001. 
Information from: Field Guide: Insect Pests of Selected Vegetables in Tropical and Subtropical Asia. 1995. B.L. Parker, N.S. Talekar and M. Skinner. Publication 94-427.

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