Proarna bufo Distant, 1905

Proarna bufo Distant 1905a: 312 (type material examined).

Type locality. Argentina and Bolivia.

Remarks. Torres (1961a) synomymized this species with P. bergi . This was probably due to the fact that the specimens examined were collected in a zone of overlap where the two species co-occur. The type specimen of P. bufo in the BMNH is morphologically distinct from the type of P. bergi . The two species also differ in their distribution and physiology (Sanborn et al. 1995b) and were considered to be separate species. Although the species was reported from Buenos Aires, Córdoba, Chaco, Formosa, La Pampa, La Rioja, Santa Fe, San Luis, Salta, Santiago del Estero, and Tucumán Provinces (Torres 1946; Hayward 1942; 1960; Bolcatto et al. 2006; De Santis et al. 2007), we determined P. bufo generally has a more southern and eastern range species than P. bergi . We collected specimens from Córdoba, Entre Rios and San Luis Provinces. The species is associated with the Espinal and Pampas floristic provinces (Sanborn et al. 2011a).

New provincial records. Entre Rios, Ruta 12— 8 km No. of Rio Parana Guazu, 3-I-1988, M.S. Heath Coll. (one male, MSHC) ; Entre Rios, Ruta 12— 8 km No. of Rio Parana Guazu, 3-I-1988, J.E. Heath Coll. (one male, one female, MSHC) ; Entre Rios, Ruta 12— 8 km No. of Rio Parana Guazu, 3-I-1988, F. Noriega coll. (two males, MSHC) .