Occurs throughout the Amazon basin and southward to the Chaco of Paraguay and follows the Río Paraguay-Parana, Argentina. It is present on Trinidad (unknown from Tobago). It has been reported from primary and secondary forest, but it is usually found in grasses and shrubs in flooded areas, seasonal swamps, slowly moving water, choked ditches or rivers in Trinidad. It may be present in pastures and other open habitats. This frog is poorly studied and likely represents a complex of cryptic species. The name
Hypsiboas hobbsi has been applied to the Venezuelan population ( McDiarmid and Paolillo, 1988) and it may be the correct name for the Trinidad population, but further investigation is needed.
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