An update of the amphibian diversity and populations status in the Northeast of Argentina (NEA) is presented. General characteristics and distribution of groups that conform the amphibian fauna of this region is also pointed out. New taxonomic status of some species are mentioned: Bufo schneideri and Scinax granulatus (ex Bufo paracnemis and Scinax eringiophilus). The environmental diversity of this region is correlated with its amphibian richness, with transitional faunas and a considerable number of endemism.AMPHIBIANS OF ARGENTINEAN MESOPOTAMIA. An update of the amphibian diversity and populations status in the Northeast of Argentina (NEA) is presented. General characteristics and distribution of groups that conform the amphibian fauna of this region is also pointed out. New taxonomic status of some species are mentioned: Bufo schneideri and Scinax granulatus (ex Bufo paracnemis and Scinax eringiophilus). The environmental diversity of this region is correlated with its amphibian richness, with transitional faunas and a considerable number of endemism.Bufo schneideri and Scinax granulatus (ex Bufo paracnemis and Scinax eringiophilus). The environmental diversity of this region is correlated with its amphibian richness, with transitional faunas and a considerable number of endemism.

Fil: Manzano, Adriana Silvina. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina

Fil: Baldo, Juan Diego. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina

Fil: Barg, Mónica Viviana. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina