Brazil (B), Colombia (B), Ecuador (B), Peru (B), Venezuela (B).
Very locally from central and southern Colombia (Meta, Guainía and Putumayo) and southern Venezuela (Amazonas) south to eastern Ecuador (Napo and Pastaza) and north-eastern Peru (Loreto and Ucayali); also south-western Pará, in central Brazil.
 
Population
Estimated population is unknown (2010).
White-bellied Dacnis (Dacnis albiventris) [XC591987]
by Jerome Fischer from Rio Javar\u00ed, AM. Reserva Natural Palmar\u00ed, Brazil (song)
White-bellied Dacnis (Dacnis albiventris) [XC65564]
by Guilherme de Melo Becher from Rio Curaray, Loreto. 01\u00ba 52' 54'',75\u00ba 11' 45'', Peru (song)
Subspecies
This genus and Cyanerpes were previously regarded as members of a separate family, Coerebidae, but later placed in present family on basis of similarities in skull anatomy; molecular phylogenies indicate that the two genera are sisters and form a monophyletic group with Tersina. Present species was formerly placed in a monotypic genus, Hemidacnis.