The keys, textes and descriptions done by Martins (Cerambycidae Sul-Americanos Vol. 10) are not 100% clear. Some caracters could fit either with vittaum (Fabricius, 1775) or subaurosum (Zaciw, 1960). Do you see a depression on the base ventrally on the mesofemurs ( "mesofêmures com sulco na lado inferior da base") ?