Also known from Brazil, Guyana, Peru, Suriname, and Venezuela (Almeida et al. 2019). The record from Argentina is corresponds to Ribeiro et al. 2017 and does not specified a locality or province.
References
RIBEIRO, J.R.I, ESTÉVEZ, A.L., MOREIRA, F.F.F. & GUILBERT, E. 2017. Revision of the Belostoma dentatum group sensu Nieser (Insecta, Heteroptera, Belostomatidae). Zootaxa 4276(2): 177–203.
ALMEIDA, T.DE M., STEFANELLO F. & HAMADA N. 2019. Belostomatidae (Heteroptera: Nepomorpha) held in the Invertebrate Collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil: inventory and new distributional records. Papeis Avulsos de Zoologia 59: e20195906