South America: Uruguay.
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de PÃnna, M.C.C. and W. Wosiacki 2003 Trichomycteridae (pencil or parasitic catfishes). p. 270-290. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 39970)
http://www.fishbase.org/references/FBRefSummary.php?id=39970&speccode=10405
