Males are bright sky blue in colour with a fine black line to the edge of the wings and a white border. Females are brown in colour becoming blue towards the body, with orange crescents towards the edges of the wings. Both males and females have pale brown undersides with black spots and orange crescents. The caterpillar reaches 1.6 centimetres in length, has a dark green body with dark spines, and yellow bands along the back and sides. Find out more!