Northern British Columbia, Canada, is an undersurveyed region for aquatic macroinvertebrates. We surveyed the Stellako River, a culturally and economically important river in the region, for adult caddisflies using Malaise traps, then identified species by using DNA barcoding, which revealed the presence of Protoptila coloma Ross (Trichoptera: Glossosomatidae). This is the first record of this species in Canada; it represents a 680-km northwards expansion of the species’ currently known range.