Caterpillar: The caterpillar is cylindriform with a constricted second segment which appears as a neck with a black collar. The head is lobed, rounded and yellowish red in colour. The caterpillar is yellowish black with brown sides which range from pale to dark brown in colour. The markings are very variable. The caterpillar is greenish white below tinged with yellow. Sometimes the green extends all over the body along with the dark markings. When newly born, the caterpillar eats the eggshelf, usually incompletely and scuttles off to a leaf where it hurriedly makes a cell for itself. Active when young, it becomes lethargic as it grows. The caterpillar ventures forth to feed only when the light is very low and at night.