Family Typical Antbirds (Thamnophilidae)

Least Concern

Serra Antwren (Formicivora serrana)


French: Grisin des montagnes German: Serraameisenfänger Spanish: Hormiguerito serrano

Neorhopias serrana


, 1929,

Sete Lagoas, Minas Gerais, Brazil


Forms a clade with F. melanogaster. Recent study involving morphometric, plumage and vocal analyses#R indicates that present species is polymorphic, varying geographically as N–S cline but showing both individual and inter-populational variation; race littoralis previously treated as a separate species, but both it and interposita lack diagnostic characters or any significant vocal differences from serrana; however, statistical differences between populations could be considered an indication of distinct evolutionary trajectories. Three subspecies recognized.

Subspecies and Distribution
  • F. s. serrana (Hellmayr, 1929) – Serra Antwren – SE Brazil (E Minas Gerais and adjacent C Espírito Santo).
  • F. s. interposita Gonzaga & Pacheco, 1990 – Paraiba Antwren – valley of R Paraíba do Sul in extreme SE Minas Gerais and adjacent NW Rio de Janeiro.
  • F. s. littoralis Gonzaga & Pacheco, 1990 – Restinga Antwren – SE Brazil in coastal Rio de Janeiro (municipalities of Cabo Frio, São Pedro da Aldeia, Arraial do Cabo, Araruama, Saquarema and Armação dos Búzios) and nearby offshore islands of Comprida and Cabo Frio.
  • Descriptive notes

    12–13 cm; 10–13 g. Male nominate race has long white supercilium, rufous-brown crown and upperparts, outer scapulars edged white, concealed white interscapular... read more


    Loudsong a monotonous series of dry or harsh notes at same pitch and pace (e.g. 18 notes, 4 seconds... read more


    Understorey of semi-humid evergreen-forest edge, dry scrub and second-growth woodland, to 1550 m;... read more

    Food and feeding

    Little published. Feeds on insects, probably also spiders. Closely associated pair-members, individuals, or family groups forage mostly 0... read more


    Nothing known.


    Presumed resident.

    Status and conservation

    Not globally threatened. Restricted-range species: present in Atlantic Forest Lowlands EBA. Locally fairly common in appropriate habitat. Nominate race known to occur in... read more

    Recommended citation

    Zimmer, K., Isler, M.L. & de Juana, E. (2019). Serra Antwren (Formicivora serrana). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 24 May 2019).