South-eastern Brazil in coastal region from southern Bahia south to Santa Catarina, extending inland in Minas Gerais (R Doce region) and Sío Paulo, and north-eastern Argentina (Misiones).
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is unknown (2010) and decreasing.
Status NT
Habitat destruction and degradation due to agricultural conversion and deforestation for mining and plantation production, urbanisation, industrialisation, agricultural expansion, colonisation and associated road-building, are the main threats.
For more information see BirdLife International Species Factsheet.
Voice
Song is a series of loud accelerating musical notes (longer, less abrupt and run together than that of Plain Antvireo (Dysithamnus mentalis)). Also an often repeated querulous 'wurr'.
Spot-breasted Antvireo (Dysithamnus) [XC598743]
by Felipe Arantes from Reserva Ecol\u00f3gica dos Petroleiros, Tingu\u00e1, Nova Igua\u00e7u, RJ, Brazil (call, song)
Spot-breasted Antvireo (Dysithamnus stictothorax) [XC753241]
by Dante Buzzetti from Duas Barras, Duas Barras, Rio de Janeiro, Brazil (song)
Subspecies
Relationships of genus not clearly established; preliminary molecular evidence suggests affiliation with Thamnophilus, and morphological characteristics have connected it with Thamnomanes. Appears to form a monophyletic group with Plain Antvireo (Dysithamnus mentalis), Streak-crowned Antvireo (Dysithamnus striaticeps), Spot-crowned Antvireo (Dysithamnus puncticeps) and Rufous-backed Antvireo (Dysithamnus xanthopterus) to which other species placed in the genus are probably closely related.
No subspecies.
Similar Species
Plain Antvireo (Dysithamnus mentalis) is pale grey below, lacks spotting on face and chest.
References
See References.
BirdLife International Species Factsheet