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Range DescriptionFormicivora erythronotos survives in a narrow coastal strip around the Baía da Ilha Grande in south Rio de Janeiro, Brazil. Although known from c.20 specimens collected in the 19th century, it was unrecorded for over 100 years until its rediscovery in 1987. It has been subsequently found at a further seven sites (Buzzetti 1998, E. Mendonça and L. P. Gonzaga in litt. 2000). The main localities are Ariró (densities of 89 pairs/km2) and Vale do Mambucaba (156 pairs/km2) (Mendonça and Gonzaga 1999b). Smaller numbers have also been recorded at Bracuí, Frade, São Gonçalo, Taquari and Barra Grande (Buzzetti 1998, Mendonça and Gonzaga 1999b, E. Mendonça and L. P. Gonzaga in litt. 2000).