The Rio Orinoco Spinetail is recorded along the Orinoco River in Venezuela and adjacent Colombia. It uses scrub on river islands and banks that are seasonally inundated.
It has a rufous crown and wing coverts, dull greyish-brown upperparts and pale underparts, with browner flanks.
It stays in tangled scrub on seasonally flooded river islands and banks, foraging from ground level up to about 3 m. It may occur in pairs.
An extinction-risk assessment has not been added yet.