The male's forewings are black. Some veins are bordered by white colour. The underside is very similar to the upperside. The hindwings are grey. The outer edge is black and it contains a chain of golden spots. The veins are black. The underside is similar to the upperside, but the basic colour is white. The body (abdomen) is black and yellow, but the underside is white and yellowish. It looks like a wasp. Head and thorax are black. The nape has a red hair-coat. The female is sexually dimorphic. The female covers the upper range of the wingspan and is usually larger than the male. The basic colour of the female is dark-brown. Many veins are bordered by white. The golden spots are bigger and they contain a black core. The underside is a very similar to the upperside.