This spiny rat is recorded from lowland Amazonian sites in Ecuador and Peru. On the rump, its coat has a dense layer of sharply pointed spines mixed with fine, wavy reddish underhairs.
The illustrated specimen's rump has a high density of sharply pointed spines mixed with fine, wavy red underhairs.
All examined specimens except the holotype came from regions of tall, evergreen, humid Amazonian forest within about 300 km of the Andean foothills. Detailed habitat was not recorded for most collection localities.
An extinction-risk assessment has not been added yet.