ɪn ɐ mˈeɪdʒɚ ɹᵻvjˈuː ʌv tˈuː θˈaʊzənd fˈɪftiːn, ˈoʊnli fˈaɪv spˈiːsiːz ɹᵻmˈeɪnd ɪn ðɪs dʒˈɛnəs, bˌʌt ɪn tˈuː θˈaʊzənd sˈɪkstiːn ɪt wʌz ʃˈoʊn ðæt fˈoːɹ ʌv ðiːz wɜː nˌɑːt klˈoʊs ɹˈɛlətˌɪvz ʌvðə θˈɛɹəps tˈaɪp spˈiːsiːz, tˈiː. ɪɹˌɛɡjʊlˈɑːɹɹɪs, ɹɪzˈʌltɪŋ ɪn ðˌɛm bˌiːɪŋ mˈuːvd tə tʃˈuːkoʊ ænd wˈædʒpɐmhˌiəɹoʊz.
In a major review of 2015, only five species remained in this genus, but in 2016 it was shown that four of these were not close relatives of the Theraps type species, T. irregularis, resulting in them being moved to Chuco and Wajpamheros.