[Ruki]

Drobnoustki w dolnej, aż do ujścia Rio Negro.

This species is known mainly from Guyana, Suriname, French Guiana and Amapá and Pará in Brazil, but is also reported to occure in the lower and middle Amazon basin, the Rio Madeira, the lower Rio Negro and the Orinoco in Venezuela.
Staeck (1998) collected it in Guyana in black water of pH 3,9-4,1.