Hisonotus acuen Silva, Roxo & Oliveira, 2014: 111, fig. 1.

Paratypes: 1 lot, 5 specimens —NUP 16444, 5, 22.2–27.1 mm SL: Brazil, Mato Grosso, Gaúcha do Norte, tributary of rio Culuene, rio Xingu basin, 13°27’26”S, 53°09’36”W, C. Oliveira, M. Taylor, G.J.C. Silva, J.M. Henriques, 3 Aug 2012 .