Adults vary by sex. Males have regular scalloped lines parallel to the wing edges and are smaller than females. Females are cream-colored with a larger body, with the same scalloped lines on the wing as the male. Two species could be confused with male gypsy moths: Tussock moths have erratic diamond patterns on the wings and are smaller. Underwing moths have erratic zigzag lines on the wings and are larger. Gypsy moth larvae are grayish-brown with yellow lateral lines, conspicuous red and blue warts (five pairs of blue in front, then six pairs of red) and thin, unequal tufts and many long hairs.