The Rusty-backed Spinetail is a furnariid associated with Amazonian waterside woodland. Its rufous back, tail, and crown contrast with a pale eyebrow. PeruAves describes it feeding in pairs or small groups in flooded-forest understory and overhanging vegetation beside lakes or slow streams.
The back, tail, and crown are rufous. The species account also describes a brown iris, a whitish eyebrow, and rufous-brown sides of the head and underparts.
Pairs or small groups forage in the understory of flooded forest and in overhanging vegetation at lake edges or along slow-flowing creeks.
An extinction-risk assessment has not been added yet.