AVRDC International Cooperators'
Mungbean Insect Pests
Asiatic Corn Borer
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
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.
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.
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.
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.
AVRDC Home | Extension Materials Home | Mungbean Home