Rio de Janeiro | Rio Grande do Sul | Madeira | Rio Grande | Rio de Janeiro (state) | Madeira River | Rio Grande do Norte | Río de la Plata | Rio | Rio Tinto Group | Rio Negro | Natal, Rio Grande do Norte | Rio Tinto | Rio Negro (Amazon) | Rio Grande Valley | Pinar del Río | Río Piedras, Puerto Rico | Rio Branco | Pinar del Río Province | Rio Ferdinand | Universidade Federal do Rio Grande do Sul | Río Negro | Del Rio, Texas | Rio Tinto Alcan | Río Piedras | Río Negro Province | Río Cuarto, Córdoba | Resende, Rio de Janeiro | Río Cuarto | Federal University of Rio de Janeiro |
dracunculus was discovered from an artificial well in the village of Rio Pardo, located in the drainage area of the Rio Branco (Rio Madeira system, Amazon basin).