Large-tailed Antshrike
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Passeriformes
- family: Thamnophilidae
- genus: Mackenziaena
- species: Mackenziaena leachii
Loreto
Puerto Eldorado
Puerto Esperanza
San Pedro
Misiones
ArgentinaMariana
Ouro Preto
Raposos
Minas GeraisAlmirante Tamandaré
ParanáCachoeiras de Macacu
Itatiaia
Rio de JaneiroPalhoça
Santa CatarinaCampos do Jordão
São Bernardo do Campo
São Paulo
BrazilPuerto Mayor Otaño
Itapúa
Paraguay