Trichomycterus brachykechenos Ferrer & Malabarba (2013)

Holotype: MCN 18929, 61.1 mm SL, rio do Sinos, Caraá, Rio Grande do Sul, Brazil, 29°45’44”S 50°19’39”W, 30 June 2006, B.B. Calegari, M.A. Azevedo & R. Hirano (Fig. 29).

Paratypes: 2 lots, 4 specimens; MCN 18930, 2, 36.3–53.7 mm SL,, rio do Sinos, Caraá, Rio Grande do Sul, Brazil, 29°43’32”S 50°16’56”W, 28 November 2007, M.A. Azevedo & T. Aguzzoli . MCN 18931, 2, 39.4–47.9 mm SL, rio do Sinos, Caraá, Rio Grande do Sul, Brazil, 29°43’32”S 50°16’56”W, 26 June 2007, M.A. Azevedo, T. Aguzzoli & M. Pairet.