Formica sanguinea subsp. subnuda Wheeler, 1903: 73 (w.) CANADA (British Columbia). Nearctic.

Primary type information: Primary type material: lectotype worker (by designation of Buren, 1968a: 33). Primary type locality: lectotype Canada: British Columbia, Yale (Dieck). Primary type depository: MCZC. Secondary type information: Secondary type material: paralectotype workers (number not stated). Secondary type locality: same as for lectotype. Secondary type depositories: MCZC, MSNG.