The Coiba Spinetail is an island bird once treated as a subspecies of another spinetail. A 2015 AOU committee proposal recognizes Cranioleuca dissita as a separate species restricted to Coiba and nearby Rancheria Island, using forest and forest edges.
Its lower surface is light brown. The proposal describes this color as a feature distinguishing C. dissita from forms formerly grouped with Cranioleuca vulpina.
It inhabits forest and forest edges, including lower and middle growth. Its globe-shaped nest contains mostly plant fibers and is built around upright branches, thin trunks, lianas, or vines.
An extinction-risk assessment has not been added yet.