- The adult and grubs are feeders of surface tissues of leaves.
- The feeding lines are narrow.The attacked leaves turn membraneous and dry up.
- The adults feed especially on tender leaves which result in partial upward rolling of lamina.
- Adult prefer to feed on the dorsal surface of the leaves by scraping linear streaks.They also feed on the ventral leaf surfaces rarely.
Randomly mark 4 one meter sq. per 0.4 Ha. Observe five hills at random in a sq.m and count the total number of bugs without disturbing the plant and work out average per hill.