This porcupine has a generally brown-looking back with pale quill tips giving it a frosted appearance. In Ecuador, its records are mainly from Andean forests at high elevations.
The back quills have white bases, black middle bands and pale tips. In this species, a short white terminal band remains visible, giving the back a frosted appearance.
The 2025 study reports that Ecuadorian C. quichua records come mainly from Andean forests at high elevations.
An extinction-risk assessment has not been added yet.