The Western Hemispingus is recorded from montane forest on the western slope of the Andes in Ecuador and Colombia. A 2022 taxonomic paper noted that only ten study skins were known and ecological information was sparse.
Study skins described in the 2022 paper show warm brown plumage with a grayish crown.
Records are from montane forest on the western Andean slope. The specimen record summarized in the 2022 paper does not establish detailed feeding or behavior.
An extinction-risk assessment has not been added yet.