This species is known from the Corrientes, Formosa, Santa Fé, Misiones, and Entre Rios provinces (Argentina); Uruguay; southern Oriental region and lower Chaco, Paraguay; and Rio Grande do Sul (Brazil). It has an altitude of 0-500m asl.
Habitat and Ecology
It is a grassland species that occurs near semi-permanent or temporary waterbodies where it breeds. The eggs are laid in foam nests, attached to vegetation at the margin of the pond. It occurs in rice fields, other agricultural areas, and rural gardens.
It is uncommon in Paraguay and Argentina, but locally common in Brazil.
It is not threatened in Paraguay where it occurs in cattle pastures nor in Brazil where it occurs in rice cultivation. It is also not threatened in Argentina.
It occurs in the San Martin Reserve-Park, Entre Rios, the El Bagual Reserve, Formosa, and in small private reserves in Argentina.
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its wide distribution, tolerance of a broad range of habitats, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Débora Silvano, Norman Scott, Lucy Aquino, Axel Kwet, Diego Baldo, Jose Langone 2004. Physalaemus riograndensis. The IUCN Red List of Threatened Species 2004: e.T57274A11613288. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T57274A11613288.en .Downloaded on 18 January 2019