ɐ θˈɜːd tˈæksən, ˈeɪ. ˈɛs. ˌɛlɪˌɑːtsmɪθˈoːɹəm, ɪz pɹəpˈoʊzd, ðˌoʊ ɪɾ ɪz nˌɑːt kˌæɹɪktɚɹˈɪstɪkli dˈɪfɹənt fɹʌm ɹˈeɪs hˈɛlɪˌoʊz tə wˈɔːɹənt sˌʌbspɪsˈɪfɪk sˌɛpɚɹˈeɪʃən, ænd ɪz dʒˈɛnɚɹəli kənsˈɪdɚd sɪnˈɑːnɪməs wɪð hˈɛlɪˌoʊz.
A third taxon, A. s. elliottsmithorum, is proposed, though it is not characteristically different from race helios to warrant subspecific separation, and is generally considered synonymous with helios.