Phenacorhamdia, Dahl, 1961

Giorgis, Pablo, Ciotek, Liliana, Almirón, Adriana & Casciotta, Jorge, 2012, First record of Phenacorhamdia tenebrosa (Schubart, 1964) (Siluriformes, Heptapteridae) from the Paraná river basin in Argentina., Ichthyological Contributions of PecesCriollos 24, pp. 1-4 : 1

The genus Phenacorhamdia

has been erected by Dahl (1961) and comprises small South American catfishes. This genus includes the following eleven valid species (Bockmann & Guazelli 2003; Ferraris 2007; Do Nascimiento & Milani 2008): Phenacorhamdia anisura (Mees, 1987) and P. provenzanoi DoNascimiento & Milani, 2008 inhabiting the Orinoco river basin, Venezuela; P. taphorni Do Nascimiento & Milani, 2008 from the Apure river drainage, Venezuela; P. boliviana (Pearson, 1924) distributed in the upper Mamoré/Madeira river basin, Bolivia; P. macarenensis Dahl 1961 , from Guaviare river basin, Colombia; P. nigrolineata Zarske 1998 , from Ucayali river basin, Perú; P. tenuis (Mees, 1986) distributed in the Maroni/Marowijne river basin, French Guiana; and the Brazilian species P. hoehnei (Miranda Ribeiro, 1914) from Taquari river basin; P. somnians (Mees, 1974) from Das Morte river basin; P. tenebrosa (Schubart, 1964) from the upper Paraná and São Francisco river basins; and P. unifasciata Britski, 1993 , from the upper Paraná river basin.

During field trips in the Paraná river basin, Argentina, four specimens of P. tenebrosa were found in the lower Paraná river basin at Yaciretá dam near Ituzaingó city, and one in the arroyo La Azotea at Pre-Delta National Park. The aim of this paper is to register for the first time the finding of this species in freshwaters of Argentina.