The pheromone, located on the dorsal surface of the hindwing, consists of cuticular hydrocarbons n-heptacosane (C27), 13-methylheptacosane (13-MeC27), and possibly n-nonacosane (C29). In addition, wing scales located on the dorsal wing surfaces in male C. eurytheme contain ridges with lamellae that produce iridescent ultraviolet reflectance via thin-film interference.
The pheromone is located on the dorsal side of the hindwing and consists of cuticular hydrocarbons such as n-heptacosane (C27), 13-methylheptacosane (13-MeC27), and possibly n-nonacosane (C29). Male C. eurytheme's wings have wing scales with ridges that produce iridescent ultraviolet reflection via thin-film interference.