Formica sanguinea subsp. rubicunda Emery, 1893k: 647, pl. 22, fig. 2 (w.q.) U.S.A. (Pennsylvania), CANADA (Newfoundland and Labrador). Nearctic.

Primary type information: Primary type material: syntype workers, syntype queens (numbers not stated). Primary type localities: U.S.A.: Pennsylvania (no collector’s name) (invalid restriction of type locality by Wheeler, 1913i: 407; no lectotype designated), Canada: Labrador (no collector’s name). Primary type depository: MSNG.

Infrasubspecies

• F. s. r. fusciceps Emery, 1895
• F. s. r. lucidula Wheeler, 1913
• F. s. r. subintegra Emery, 1893
• F. s. r. sublucida Wheeler, 1913
• F. s. r. subnuda Emery, 1895