Also known from Bolivia, Brazil, and Paraguay (Coscaron 1983). The record from Argentina is doubtful because there is no reference to any place in Argentina in the description of the species.
References
COSCARON, M. C. 1983. Revision del genero Rasahus (Insecta, Heteroptera, Reduvidae). Revista del Museo de La Plata, N.S.13, Sec. Zoologia 136:75-138.