Uncommon and endangered spinetail with a very small range in the western Andes of Peru. It has a gray head and back, a pale throat, buffy-chestnut lower underparts, a broken white eye-ring, and a long, rusty-edged tail. Inhabits dry to semi-humid scrub and forest. Vocalizations include a slow series of squeaks, sometimes preceded by a chuckling sound, and a much faster rattle.