The bottom of the wings is a network of lines and this butterfly is giving its name. Particular to this butterfly is that there are two shapes. The first generation in spring is orange red with black spots, while the summer generation is black with a white band and red-orange dots on the upper wing. The spring generation is also smaller than the summer generation with 17 to 21 millimeters with a front wing length of 16 to 18 millimeters. Through the veins on the underside, the summer shape can not be confused with other butterflies.