Also known from Brazil, and British Guiana (Giacchi 1982).
References
GIACCHI, J.C. 1982. Revisión de los Stenopodainos americanos. V. El género Diaditus Stal, 1859 (Heteroptera, Reduviidae). Physis, secc. C, 41(100): 9027.
MELO M.C., DELLAPÉ P.M., CARPINTERO D.L. & MONTEMAYOR S.I. 2011. Heteroptera (Hemiptera) from the Chaco National Park (Argentina). Zootaxa 2999: 1–19.