ðə fˈɛɹəmˌoʊn, loʊkˈeɪɾᵻd ɔnðə dˈoːɹsəl sˈɜːfɪs ʌvðə hˈɪndwɪŋ, kənsˈɪsts ʌv kjuːtˈɪkjʊlɚ hˈaɪdɹəkˌɑːɹbənz ˈɛnhˈɛptɐkˌɑːseɪn sˈiː twˈɛnti sˈɛvən, θˈɜːtiːnmˈɛθəlhˌɛptɐkˌɑːseɪn θˈɜːtiːnmˌiː sˈiː twˈɛnti sˈɛvən, ænd pˈɑːsᵻbli ˈɛnnˌɑːnˈækəsˌeɪn sˈiː twˈɛnti nˈaɪn.
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).