Eastern Panama (eastern from Colón) and extreme north-western Colombia (Chocó).
 
Population
Estimated population is 2,500 - 9,999 (2010) and decreasing.
Status VU
Habitat destruction and degradation through clearance for agriculture and urbanization is the main threat.
For more information see BirdLife International Species Factsheet.
Speckled Antshrike (Xenornis setifrons) [XC758689]
by id from Cerro Mecana \, Colombia (song)
Speckled Antshrike (Xenornis) [XC494973]
by Iv\u00e1n Lau from Guna Yala, Guna Yala Comarca, Panama (song)
Subspecies
Relationships uncertain. Possibly closest to Thamnomanes or Megastictus species on basis of similarities of posture, tail movements, foraging behaviour within mixed-species flocks, and some vocalizations.
No subspecies.
Similar Species
Female Western Slaty-Antshrike (Thamnophilus atrinucha) is less streaky and more well-marked on wings.
References
See References.