ɐdˈʌlts ɑːɹ ˌɔn wˈɪŋ fɹʌm mˈeɪ tʊ ɑːktˈoʊbɚɹ ɪnðə nˈɔːɹθ ænd fˈɛbɹuːˌɛɹi tə noʊvˈɛmbɚ fˈɑːɹðɚ sˈaʊθ ɪnðə jˌuːˈɛs, ænd ðeɪ flˈaɪ jˈɪɹ ɹˈaʊnd ɪnðə tɹˈɑːpɪks.
Adults are on wing from May to October in the north and February to November farther south in the US, and they fly year round in the tropics.