Nibbling of rice earhead and defoliation leaving midrib in rice is caused by

Nibbling of rice earhead and defoliation leaving midrib in rice is caused by Hieroglyphus banian (rice grass hopper).
Rice grasshopper is an important pest of rice. It causes heavy damage to nurseries and reduces yield. Adults are about the size of your little finger. The body is a shiny greenish yellow colour with three black lines on its upper side.