It can be divided into four stages: egg, larva, chrysalis and adult.Eggs are dome-shaped and hemispherical, clustered on the surface of leaves.Gray at birth, brown after 12 hours.The larva has inverted Y-shaped white stitches on the head and is pale yellow or green during growth.The larvae turn into pupae, oval in shape, deep in the soil.Reddish brown, adult after emergence, grayish brown, nocturnal.
